35. _______ your letter, I would have written back two days ago.

　　 A. If I received　　　　　　 　　　　B. Should I receive　

　　 C. Had I received　　　　　　　　　 D. If I could have received

34. The desks and seats can be　 　　　　　　to the height of any child.

　　 A. adopted　　　 　 B. adapted　　　 C. adjusted　　 D. admired

29. I like her coat and she liked mine, so we ______. 　　 A. communicated　　　 B. swapped　　　 C. returned　　　 D. sold 30. As I ran up the stairs, my foot ______ and I fell. 　　 A. jumped　　　 B. slipped　　 C. ran　　 D. rushed

31 Would you like to give a performance at our school art festival ______ next month?

　　 A. being held　　 B. to hold　　 C. to be holding　　　 D. to be held

32 The flu is believed　_____by viruses that like to reproduce in the cells inside the human nose and throat.

　A. causing　　 B. being caused　　 C. to be caused　　 D. to have caused

33 _____ matters most in learning English is enough practice. 　　 A . what　　　 　B . why　　　 　C . how　　　 　 　D. Which

27. The scientists all agreed that rules of physics, ______ we are all familiar, govern the world. 　　 A. to which　 　　 B. on which　 　 　C. which　　　 D. with which

28 Give him time. It's always hard to ______ a new place.

　　 A. devote to　　 B. stick to　　 C. lead to　 D. adjust to

26. _____ the students in per school go to college in their teens. 　 A. A good many　　　 B. A great many of　　 C. A　 great deal of　 D. A lot of