Inasecond-handbookshop,Billycameacrossabookwhichhethoughtwascertainlya____edition.
A、rare
B、scarce
C、seldom
D、hardly
Thetimehascome_____wemakeextensiveuseofnuclearenergy.
A、When
B、while
C、as
D、since
Rock:______.
Sharon:Verywell,andtheexperimentisnearlyfinished.
A、Howareyou?
B、Howistheexperiment?
C、Howareyougettingonwiththeexperiment?
D、Whatdoyouthinkoftheexperiment?
Idon’tunderstand____believehim.
A、whydon’tyou
B、whyyouno
C、whyyoudon’t
D、whynotyou
Istillrememberthedays____westudiedtogether.
A、that
B、which
C、where
D、when