Is this the research center _____you visited the lab last year ?
A. which B. the one C.that D. where
Don’t believe him .He is just _____ an excuse .
A. making out B. making up of C. making up D. making from
-Would you mind if I take the seat?
- .
A．Yes, sit down, please B．Surely, never mind
C．No, not at all D．No, you can’t take it
The bell rang and came in Mr.Brown, a book in his hand. Then the class began.
A．for B．when C．with D．while
In the past 5 years a great deal of money _____ improving the environment of the school.
A. is spent B. has been spent C. was spent D. had been spent
China has been working very hard to stop the endangered animals ______ .
A. dying out B. dying away C. dying down D. dying hard
