The Greens ______ the welcome party already before Henry came to talk about it.
A. has arranged B. would arrange
C. were arranging D. had arranged
The Korean girl can speak Chinese without difficulty because she ______ in China for years.
A. stay B. will stay C. has stayed D. stayed
Sam denied ______ computer games for hours in the net bar yesterday afternoon.
A. to play B. playing C. play D. played
You’d better ______ ask old granny for help because her memory is getting poorer now.
A. not B. don’t C. not to D. to not
One ______ easily lose his way when he visits or comes to a new place.
A. may B. must C. need D. should
You will surely realize your dream of being a scientist ______ you give it up halfway.
A. though B. if C. unless D. since
