35. It is 15 years since the doctor 　　　　　　　on his life’s research into the cure for this deadly disease.

A set out　　　　 　　B turned out　　　 C made out　　　　 D took out

34. Whenever asked to help me with my lessons ,he always refuses ,　　　　　 　he is too bust.

A to say　　　　　　 B saying　　　　　 C says　　　　 D having said

33. We should all remember that some great scientific discoveries 　　　　　　by chance.

A occurred　　　　 B were occurred　　　 C have occurred D had been occurred

32. The farmers wondered if vegetables could bring in 　　　　　　　crops.

A as many as　　　 Bas good as　　　 C as much as　 D as well as

31. you have tasted Beijing Duck ,you can’t imagine how delicious it is.

A Although　　　　 B After　　　　 C Unless　　　 D When

30. At the foot of the hill 　　　　　　a big lake surrounded by trees.

A lays　　　　 　　　B is laying　　 C lies　　　　　 D is lying

29. There is a feeling in her 　　　　　　　　she will be chosen to attend the conference on behalf of her company.

A which　　　　　　 B of which　　 C what　　　　 D that

28. Many teachers strongly objected to 　　　　　　　　at school.

A smoke　　　　　　 B smoking　　　　 C smoked　　　 D having smoked

27. –She has tried many kinds of medicine .

　 -- But 　　　　　has any effect on her disease

A noting　　　　　　 B none　　　　　　 C little　　　　 D no one