The baby was about 52 centimeters tall _______ birth.
A. in B. at C.on D.for
I can see some children _________ basketball in the playground now.
A.play B.played C.playing D.to play
In summer milk will quickly go bad _________ it is put into a fridge (冰箱).
A.though B.unless C.because D.once
---Your English is so good. Who taught you?
---___________. I learned it all by myself.
A.Somebody B.Everybody C. Nobody D.Anybody
We wanted to stop to have a rest. But the coach (教练) ordered us to keep _______.
A.moved B.to move C. move D. moving
Betty will ring me up as soon as she ________ in Shanghai.
A. arrive B.arrives C. arrived D.will arrive
