21. You ________ help me if you don't have time. I can do th

请教英语高手 21. you()the look on his face when he won the prize
a. would have seen
b. should have seen
c. must see
d. can be seeing
满分：2 分
22. in the past 30 years china () great advances in the socialist *** and socialist construction.
a. has made
b. have made
c. . had made
d. having made
满分：2 分
23. with ()three inches of rain falling in a six-month period, the farmers found it necessary to irrigate the land
a. less than
b. little than
c. fewer than
d. less few than
满分：2 分
24. the ()meaning of this word isn’t used now, but you can look it up in a big dictionary.
a. chief
b. principal
c. elementary
d. primary
满分：2 分
25. he is really incompetent! the letter () yesterday.
a. should be finished typing
b. must be finished typing
c. must have finished typing
d. should have been finished typing
满分：2 分
老王 19:13:32
26. “when is tom going to leave?” “he is going to leave () this week.
a. sometimes
b. some time
c. sometime
d. somewha
满分：2 分
27. no one () that to his face.
a. dares say
b. dares saying
c. dare say
d. dare to say
满分：2 分
28. you will have to practice () times before you can do it.
a. may more
b. more several
c. more often
d. more many
满分：2 分
29. he was a good runner so he ()escape from the police.
a. might
b. succeeded to
c. would
d. was able to
满分：2 分
30. true hibernation takes place only among()animals
a. whose blood is warm
b. blood worm
c. warm-blooded
d. they have warm blood