1 . It was not until 1978_____ set free from the prison.

A．that the old professor was	B．did the old professor
C．was the old professor	D．that was the old professor

2 . -- I didn't realize how popular the restaurant was until I made a reservation the other day.
-- I beg your pardon, but when __________?

A．was you realized it

B．it was that you realized it

C．you realized it

D．was it that you realized it

3 . It wasn’t until near the end of the letter ______ she mentioned her own plan.

A．where

B．that

C．why

D．when

4 . The question that puzzled them is ____ they can get rid of the air pollution in the area.

A．how is it that

B．that how

C．what is it

D．how it is that

5 . ---Where did you see the movie Life of Pi directed by Ang Lee?
---- It was in the cinema ________ I regularly go .

A．which

B．that

C．where

D．what

6 . When asked to explain_______ he did to make his students so fasinated with his lessons, the teacher paused and thought deeply．

A．what was it that	B．that what it was
C．what it was that	D．what was it

7 . It was probably at that moment _____ I understood what kindness really was.

A．that

B．when

C．which

D．what

8 . It was with great joy       the couple found their missing son after 18 years.

A．when

B．that

C．what

D．which

9 . You don’t need to make fancy foods to impress guests—it is something simple but good _____ will do.

A．what

B．that

C．which

D．who

10 . It was 80 years before Christopher Columbus crossed the Atlantic 　　　 　 Zheng He had sailed to East Africa.

A．when	B．that
C．after	D．since