This math problem is too difficult. Can you show me________, George?
A. what to work out B. to work it out
C. how to work it out D. how to work out it
—Who is the little girl in the picture?
—It's me. The picture __________10 years ago.
A. took B. is taken C. has taken D. was taken
—Mom, when can I go out to play football?
—Finish your homework first, or I ________let you go out.
A. don't B. didn't C. won't D. haven't
What time do you expect her________?
A. arrive B. is arriving C. arriving D. to arrive
Elephants eat________, but they can move _______when necessary.
A. noisy; silent B. noisily; silently C. noisily; silence D. noisy; silence
—What do you think of Liu Huan?
—Oh, he is my favourite singer. I think no one can sing________.
A. good B. well C. better D. best
