I didn't see you ____ in. You must have been very quiet.( )
A.comesB.to comeC.comeD.have come
We can't see_____sun at night.( )
A.aB.anC.the
A lot of trees ____________ every spring in Yiyang city. ( )
A.plantB.is planted
C.are planted
Could you please tell me ____________ I can buy some stamps?
Yes. There is a post office on Center Street. ( )
A.whyB.whereC.when
Whose volleyball is this?
It ___________ be Linda's. She loves volleyball. ( )
A.mustB.can'tC.needn't
_________, he has to listen to tapes every day. ( )
A.To learn English well
B.Learn English well
C.Learning English well