In __________ preparation for Shenzhou If, scientists need __________ knowledge of weather changes.
She will have to find some other work for she can't ________ this loud noise any more.
The boy said ________ couldn't he work out the problem but his teacher didn't know how to do it.
.Carol said that the work would be well done by the end of October, ________ personally I wondered completely.
I've just seen no more than one copy of" Gone with the Wind"in the bookshop opposite. Tom, go and buy______ back.
— Have you read this book? — Yes. But that one is ________ worth reading.