The waste can be recycled into new products, which ________ will save natural resources.

A．in turn B．above all

C．by chance D．at least

____ you may be right , I can’t agree completely.

　 A. While　　 　 B. As　　 　 C. If　　 　　 D. Since

—I think I’ll give Bob a ring.

—You________.You haven’t been in touch with him for a long time.

A．should 　　　　B．will　　　　　　 C．may 　　　　 D．have to

Nine in ten parents said there were significant differences in their approach to educating their

children compared with　　　　 of their parents．

A．those　 　　　　　　 B one　 　　　　 C．both 　　　　　　 D．that

The football match was really _______. No one was sure which side ________ until the last moment.

　 A. firm; would win　 B. exciting; was winning

C. tight; would win　 D. close; was about to win

China has invested 15.2 billion yuan so far this year to support pig keepers, in a(n) _______ to ensure enough pig supplies.

A. contribution　　 B. effort　　　　 C. promise　　　　 D. purpose

—I still cannot figure out why he missed his flight.

—He ____ an accident on the way to the airport.

A. could have had B. should have had　 C. would have had　 D. must have had

With summer coming on, the weather gets hot _________.

A. day after day　　　　　　　 B. day and night　

C. day in and day out　　　　　 D. day by day

It is really strange that the girl ___ so early.

A. has been married B. has married C. be married D. would marry

What surprised me most was that there appeared a ____ look on her face on hearing the unexpected news.（ ）

A. worrying　 B. worried　 C. worry　 D. worries