1.   It was not    she took off her glasses I realized she was a famous film star.

A. when, that  B. until, that              C. until, when   D. when , then

2.   I       Mr White at that time, otherwise I wouldn’t have asked you for some information about him.

A. hadn’t known  B. didn’t know C. don’t know  D. haven’t known

3.   When he took      charge of that company, there were already three companies that were in   

possession of him and his wife.

A. the; the B. the; / C. /; the D. /; /

4.   The woman,       of the truth of her report, didn’t give up.

A. convincing  B. convinced   C. having convinced  D. to be convinced