1 . ________ we saw the TV programme did we know he was an astronaut.

A．Not until

B．Unless

C．Before

D．When

2 . _____he is，_____he can do something that grown­ups do.

A．A boy as;but	B．A boy though;yet
C．Boy as;yet	D．Boy as;but

3 . As he has been in a terrible state of mind these days, on no account_____succeed in the coming English speech competition.

A．has he

B．does he

C．will he

D．he will

4 . When I got home last night, I was frightened to find that in front of my door ________.

A．was seated a large dog

B．sat a large dog

C．a large dog was seated

D．did a large dog sit

5 . ________ to do the work, I should do it some other day.

A．If were I

B．I were

C．Were I

D．Was I

6 . __________, the dancers practice hard to make their dreams come true.

A．Being disabled as they	B．Although disabled they are
C．Disabled though they are	D．As they are disabled

7 . __________ that their marriage broke up in the end.

A．So often did the couple quarrel	B．So often does the couple quarrel
C．So often quarrelled the couple	D．So often quarrels the couple

8 . Not only ____ the data fed into it, but it can also analyze them.

A．the computer can memorize	B．can memorize the computer
C．do the computer memorize	D．can the computer memorize

9 . So sudden ________ that Timothy fainted ________ he knew it.

A．was the news; for the moment	B．the news was; for the moment
C．was the news; the moment	D．the news was; the moment

10 . Not only _______the Dubbing Talent Show held three weeks ago, but also _______ great admiration for the contestants’ marvellous performance.

A．did the students enjoy, the teachers had

B．the students enjoyed, did the teachers have

C．did the students enjoy, did the teachers have

D．the students enjoyed, the teachers had