30.　 Helen and Linda were introduced to each other _________ at a party.

A. for the first time　　 B. the first time　　　　　 C. all the time　　　 D. for some time

29.　 – You look very pale; you ______ very tired.

--- Yes, I didn’t sleep at all last night.

A. can be　　　 　　　　　　　 B. can have been　　　　 C. must be　　　　　 D. must have been

28.　 There are _______ sheep on the grassland.

A. a great deal of　　　　 B. a plenty of 　　 　　 C. a number of　　　　　 D. the number of

27.　 – Shall we go for a picnic this weekend?

-- Well, with all this work________, I don’t know if I’ll have time to go out.

A. to do 　　　　　　　　　　 B. doing　　　　　　　　　　　　　　 C. done　　　　　　　　　　　 D. do

26.　 I know nothing about him _______ he is from the USA.

A. besides　　　　　　　　　 B. except　　　　　　　　　　 C. except that　　　　　　 D. except for

25.　 ______ what he had already, the new stamps were not very interesting.

A. comparing with　　　 B. compare with　　　　 C. To compare with　 D. compared with