27．The number of them people invited ________ fifty，but a number of them ________ absent for different reasons.
A. were; was B. was; was
C. was; were D. were; were
26．A library with five thousand books ________ to the nation as a gift.
A. is offered B. has offered
C. are offered D. have offered
25．All but one ________ here just now.
A. is B. was
C. has been D. were
24．Three-fourth of the surface of the earth ________ sea.
A. is B. are
C. were D. has been
23．The White family ________ very large. All the family ________ animal lovers.
A. is; are B. is; is
C. are; is D. are; are
22．-Where ________ my scissors?
- ________ right on the desk.
A. are; It’s B. is; It’s
C. are; They are D. is; They are
21．Either you or the headmaster ________ the prizes to these gifted students at the meeting.
A. is not decided B. are to hand out
C. are handing out D. is to hand out
20．John and Mary, ________ sure to come to our party this evening.
A. be B. are
C. is D. who are
19．The factory，including its machines and buildings, ________ burnt last night.
C. were D. was
18．- ________ your clothes?
-No，mine ________ hanging over there.
A. Is it; is B. Are these; are
C. Is it; are D. Are these; is