Thetimehascome_____wemakeextensiveuseofnuclearenergy.
A、When
B、while
C、as
D、since
Mary keeps talking about the party.She had a very good time,______she?
A、hadn't
B、had
C、didn't
D、did
Tammy: Someone is at the doctor.
Richard: ______.
A、Whoishe?
B、Who'sit?
C、Whoheis?
D、Whoitis?
Nearby were two boats ____ they had come to the lonely island.
I want to go to the grocery,but you _______with me.
A、neednottogo
B、don'tneedgo
C、notneedtogo
D、neednotgo