It ________ we had stayed together for a couple of weeks ________ I found we had a lot in common.

A. was until；when 　　　　　　　　　　　　　　 B. was until；that

C. wasn’t until；when 　　　 D. wasn’t until；that

Mr. Baker is busy these days　　　　　　　　 ________(写一本新书)on how to develop a child’s reading skill.(work)

—Why do you look so upset?

—I broke up with my girlfriend.If only I ________ more about her.

A．care B．caredC．had cared 　　　 D．had been cared

Is this the reason ______ at the meeting for his carelessness in his work?

A. why he explained　　 B. he explained　 C. what he explained　 D. how he explained

The Canadian friends have given us a lot of books, few of _____ a bit difficult for us.

A. them are 　 B. that is　　 C. which are 　 D. which is

Without_________ (许可),you cannot enter the laboratory.

Not_____ the exact departure time, he missed his flight.

A. to be told B. to have been told　 C. being told　 D. having been told

. —Mary wants to see you tonight.
—I’d rather she_________tomorrow.
A. comes                      B. came
C. will come                   D. should come

His casual clothes were not ____ for such a formal occasion.

A. ready　　　　 B. good　　　　　 C. special　　　　　 D. appropriate