21. He is responsible _ the project.
A) for
B) to
C) with
D) at
Answer: A) for
22. The shop is open _ 9 a.m. _ 6 p.m.
A) at / to
B) from / to
C) in / on
D) on / until
Answer: B) from / to
23. The keys are _ my bag.
A) in
B) at
C) on
D) over
Answer: A) in
24. He divided the cake _ six pieces.
A) in
B) into
C) among
D) between
Answer: B) into
25. The plane flew _ the clouds.
A) under
B) over
C) in
D) across
Answer: B) over
26. He is angry _ his brother.
A) with
B) at
C) for
D) about
Answer: A) with
27. She congratulated him _ his success.
A) for
B) on
C) with
D) at
Answer: B) on
28. They are worried _ the exam results.
A) at
B) about
C) for
D) on
Answer: B) about
29. The village lies _ the river.
A) by
B) on
C) at
D) in
Answer: A) by
30. He is addicted _ playing video games.
A) at
B) in
C) to
D) for
Answer: C) to