You be tired after one hour’s walk . please stop to have a rest.A. need B.must C.can
If I have seven days , I’d like to go to Beijing.
I went to the beach. Where did you go the school trip?
_________ it is! Thank you very much!
With the help of the computer, information can ______ every corner of the world very quickly.
The doctor ________ the woman ,but he couldn’t find out what was wrong with her..