________，volunteering is both a chance to help others and a good way to develop ourselves.
A. To my surprise B. To be honest
C. In order to D. Be similar to
—Where is your uncle?
—He ________ to South Africa on business.He has ________ there twice.
A. has been；gone B. will go；been
C. went；gone D. has gone；been
—How long have they worked in the zoo?
—________.
A. In five years B. For five years
C. Since five years D. Five years ago
—Do you know Wang Qin well?
—Sure.We ________ friends since ten years ago.
A. became B. have become
C. were D. have been
It's quite a ______ that you can't go to the great concert.
A. worry B. illness C. surprise D. shame
I will meet Jane at the station. Please________ what time she will arrive.
A. count B. choose C. check D. catch
