He teaches in ___ university and is ___expert on politcs.

    A. an, a    B. the, a    C. a. an    D. a. the

I have only one uncle, ____ I can turn to for help.

      A. that     B. which     C. whom       D. /

____ has recently been done to provide more buses for the people, a shortage of public vehicles remains a serious problem.

A、That B、What C、In spite of what D、Though what

The performance of the host, _____ to please the audience and draw their attention, was greeted with a cold silence, however.

A. had intended       B. intended          C. being intended      D. to intend

The joke told by Tom made us _____, so the teacher couldn’t make himself _____.

A. to laugh; hearing                       B. laughing; heard

C. laughing; hear                         D. laughed; heard

I left very early last night, but I wish I _____ so early.

A. didn’t leave　　　　　　               B. hadn’t left

C. haven’t left　　　　　　               D. couldn’t leave

One of the requirements for the fire is that the material ________ to its burning temperature.

A. is heated                                                 B. will be heated       

C. would be heater                                      D. be heated

There was plenty of time. She ___.

A. mustn't have hurried             B. couldn't have hurried

C. must not hurry                   D. needn't have hurried

Remember to send me a photo of us next time you ______ to me.

A.are writing                            B.will write

C.has written                            D.write

Mike didn’t notice Alice entering his room. He ____ a phone call.

A.answered         B.has answered        C.was answering      D.is answering