Our teacher said that the moon ________ around the earth.
A. traveled B. will travel C. has traveled D. travels
Even though you don't like to go shopping with her，you should refuse her ________．
A. politely B. quickly C. loudly D. normally
We all know travel can ______ our knowledge of the world.
A. discover B. develop
C. increase D. review
—What are you doing this weekend?
—I ________ visit my uncle，but I'm not sure.
A. needn't B. must C. might D. mustn't
—Be quiet！Mr.Smith is coming.
—Don't worry.It ________ be him.Mr.Smith is much taller.
A. mustn't B. must C. can't D. might
I saw Li Ming ________ in the river just now.He must still be near here.
A. plays B. playing C. to play D. played
