A small car is big enough for a family of three　　　 you need more space for baggage.?

A.once　　　　　　　　 B.because　　　　　 C.if　　　　　　　　 D.unless

Only by practicing a few hours every day _____ be able to improve your English.

A. you can 　　　 B. can you　 C. you will　　　 D. will you

Without electricity human life _____ quite different today.

A. is B. will be C. would have been D. would be

We had poor food, but ________， we enjoyed our stay there.

　 A．after a while　　　　 　　　B．in total

C．on the whole　 D．on average

________ he comes, we won’t he able to go.

A. Without　 　　　B. Unless　　　　 C. Except　 　　　 D. Even

Mary is not poor and she is not eligible for an a______.

You should tell the manufacture that the design of the furniture _____ meet the need of customers, or their products will not sell well.

 A.must                B. shall                  C. may                  D. need

Some biologists believe this is an ancient survival strategy, _______ a diet with 30 percent fewer calories than usual increased life span.

A. for which　　　 　　　B. to which　　 C. of which　　　 D. in which