1 . Many people refused to believe that living things, including humans, ________ from lower forms of life.

A．evolved

B．had evolved

C．have evolved

D．were evolving

3 . By the end of last week, they ________(finish) 80 percent of the work.(所给词的适当形式填空)

5 . She ________ (learn) some English before she came to our school. (所给词的适当形式填空)

6 . The children failed to hide their disappointment when they found out the school________ the party.

A．cancels	B．will cancel
C．has cancelled	D．had cancelled

7 . I ______(intend) to come over to see you, but was prevented from doing so by the heavy rain.(所给词的适当形式填空)

9 . By about 6,000 BC, people ________(discover) the best crops to grow and animals to raise.   (所给词的适当形式填空)

10 . Look at the trouble I am in! If only I ________(follow) your advice. （所给词的适当形式填空）