—Has the problem been settled?

—Yes. Dr. Sun has made ________ everything that is impossible for us to understood.

A. clear　　　　　　　　 B. it clear　　　　　　   C. clearly　　　　　　   D. it clear to us

The chief editor came upstairs and asked what was ________.

A. happened　　　　   B. going on　　　　    C. took place　　　　 D. held

—The comrade has finished the work on the machine.

—He ________ throughout the night!

A. can have been working　　　　　　　　   B. must have worked

C. must work　　　　　　　　　　　　　　　　    D. must have been working

Which of the following is not correct?

A. John, in company with his brother, feel safer.

B. Lanny liked to talk as well, so they kept each other company.

C. Don’t worry. I will keep company with you as far as the school.

D. You may know a man by the companies he keeps.

I like ________ in the autumn when the weather is clear and bright.

A. this　　　　　　　　   B. that　　　　　　　　   C. it　　　　　　　　　　  D. one

I would appreciate ________ very much if you could give me some suggestions.

A. this　　　　　　　　   B. that　　　　　　　　   C. it　　　　　　　　　　  D. you

—Will you see to ________ that all the papers should be handed in after class?

—All right.

A. this　　　　　　　　   B. it　　　　　　　　　　  C. me　　　　　　　　    D. them

—The man is getting too fat.

—That’s why he ________ a diet to try to lose some ________.

A. has gone on; weight　　　　　　　　　　   B. is on; weights

C. is in; weight　　　　　　　　　　　　　　　　   D. is in; weights

Tom ________ to make us comfortable at his party, which was very kind of him.

A. spent nothing　　　　　　　　　　　　　　　　 B. spared no efforts

C. spare everything　　　　　　　　　　　　　　 D. brought everything out

The reason ________ their not being employed was ________ they did it ________ much the same way.

A. for; because; by B. why; that: in　　  C. for; that; in　　    D. of; because; by