A.

B.

C.

D. of college students to master for college students to master that college students master that college students to master

19. Henry would never forget _______ his mother-in-law for the first time.

He was so pleased with the gifts she brought for him.

( C )

A. meet

B. to meet

C. meeting

D. met

20. Do you know the man _______ under the apple tree?

( C )

A. lay

B. lain

C. lying

D. laying

21. _______ a reply, he decided to write again.

( C )

A. Not receiving

B. Receiving not

C. Not having received

D. Having not received

22. That T-shirt was so tight that he decided to have it _______.

( C )

A. be enlarged

B. enlarge

C. enlarged

D. to enlarge

23. _______ at such a time, his work attracted much attention.

( B )

A. To publish

B. Published

C. Publishing

D. To be published

24. _______ from space, we can find that our earth looks like a“blue planet”.

( B )

A. Seen

B. Seeing

C. Having seen

D. To see

25. The manager has his employees _______ a business report every week.

( D )