1. She worked hard ___ she could pass the exam.
(A) so that
(B) because
(C) although
(D) unless
2. He will not succeed ___ he tries sincerely.
(A) because
(B) unless
(C) if
(D) so
3. I waited for him ___ he arrived.
(A) until
(B) unless
(C) because
(D) so
4. She did not come ___ she was sick.
(A) although
(B) because
(C) unless
(D) until
5. You can borrow my car ___ you return it on time.
(A) so that
(B) although
(C) because
(D) if
6. He speaks so fast ___ I cannot understand him.
(A) that
(B) because
(C) although
(D) unless
7. ___ he was tired, he continued working.
(A) Although
(B) Because
(C) If
(D) Unless
8. I will call you ___ I reach home.
(A) while
(B) until
(C) when
(D) unless
9. She left early ___ avoid the traffic.
(A) to
(B) for
(C) because
(D) although
10. He failed ___ working hard.
(A) although
(B) because
(C) in spite of
(D) even if
11. ___ being rich, he is very humble.
(A) Despite
(B) Although
(C) Because
(D) Unless
12. I locked the door ___ no one could enter.
(A) although
(B) so that
(C) unless
(D) because
13. She will join us ___ she finishes her work.
(A) when
(B) unless
(C) although
(D) because
14. He could not attend the meeting ___ his car broke down.
(A) while
(B) because
(C) unless
(D) although
15. I woke up early ___ I wouldn’t miss the bus.
(A) because
(B) so that
(C) unless
(D) although
16. She kept quiet ___ she knew everything.
(A) when
(B) if
(C) although
(D) because
17. You should stay home ___ you are not feeling well.
(A) if
(B) although
(C) unless
(D) because
18. He ran fast ___ he was late.
(A) unless
(B) because
(C) although
(D) so
19. I couldn’t open the box ___ having the key.
(A) unless
(B) because
(C) although
(D) despite
20. I will not go ___ it stops raining.
(A) because
(B) unless
(C) although
(D) if
21. He saved money ___ buy a new bike.
(A) so that
(B) to
(C) because
(D) although
22. She didn’t eat anything ___ she was hungry.
(A) because
(B) although
(C) unless
(D) so that
23. He slept early ___ he was very tired.
(A) unless
(B) if
(C) although
(D) because
24. ___ it was raining, they went for a walk.
(A) Although
(B) Because
(C) If
(D) Unless
25. I cannot help you ___ you ask me.
(A) unless
(B) because
(C) although
(D) until
26. She was late ___ the traffic jam.
(A) although
(B) unless
(C) because of
(D) if
27. He left quietly ___ wake anyone up.
(A) to
(B) for
(C) because
(D) although
28. ___ he works hard, he will succeed.
(A) Because
(B) Unless
(C) Although
(D) If
29. She called me ___ I had forgotten my bag.
(A) because
(B) although
(C) unless
(D) so that
30. We waited ___ the teacher arrived.
(A) until
(B) although
(C) unless
(D) if
31. He kept trying ___ failing many times.
(A) because
(B) despite
(C) although
(D) unless
32. I will join you ___ I finish my work.
(A) unless
(B) because
(C) if
(D) although
33. She wore a jacket ___ it was cold.
(A) so
(B) although
(C) because
(D) unless
34. He didn’t speak ___ he knew the answer.
(A) because
(B) unless
(C) if
(D) although
35. I will buy this shirt ___ it fits me.
(A) because
(B) unless
(C) if
(D) although
36. They left early ___ reach on time.
(A) so that
(B) although
(C) unless
(D) because
37. ___ being tired, he completed the work.
(A) If
(B) Although
(C) Despite
(D) Because
38. She studies hard ___ she wants good grades.
(A) unless
(B) because
(C) although
(D) if
39. He stayed home ___ the heavy rain.
(A) despite
(B) although
(C) because of
(D) unless
40. I won’t eat this ___ it is fresh.
(A) although
(B) if
(C) unless
(D) because
41. She smiled ___ she was sad inside.
(A) although
(B) unless
(C) because
(D) if
42. He finished the work early ___ he could rest.
(A) unless
(B) so that
(C) because
(D) although
43. ___ you study well, you will pass.
(A) Because
(B) If
(C) Unless
(D) Although
44. She didn’t go out ___ the weather was bad.
(A) although
(B) because
(C) unless
(D) if
45. He worked hard ___ he got promoted.
(A) because
(B) unless
(C) although
(D) so
46. ___ being new, she performed very well.
(A) If
(B) Although
(C) Because
(D) Despite
47. He stayed quiet ___ he was angry.
(A) because
(B) although
(C) unless
(D) so that
48. I will stay here ___ you return.
(A) unless
(B) because
(C) although
(D) until
49. She left early ___ catch the train.
(A) although
(B) to
(C) because
(D) unless
50. He didn’t buy the phone ___ it was too expensive.
(A) because
(B) unless
(C) although
(D) if