It was not ________ she took off her dark glasses ________ I realized she was a famous film star.

[　　]

She is sure to ________ for you.

[    ]

A. make special effort    B. make a special effort

C. take a special effort  D. take a special effort

The price ________, but I doubt whether it will remain so.

[　　]

__________ not in his office.

[    ]

A. It was happened that he was B. It happened to him be

C. It happened that he was　　 D. He happened to be

He had to get the car fixed no matter ________ it cost.

[    ]

A. how  B. how many  C. how much  D. whatever

Changcheng Computer Company ________ the prices of its products, while the prices of the products of Hisense ________.

[　　]

A．brought down; went up.

B．has raised; have cut down

C．was reduced; have risen

D．went up; were brought down

He ________ going to the front last year.

[　　]

_______ computers are of great benefit to the development of science and technology.

[    ]

A. The fact is what　　   B. The one fact is that

C. What the fact is what  D. The fact is that

The problem is difficult ________.

[　　]

A．to be done

B．to be worked out

C．to work out

D．to doing

—It's very cold here.

—Yes, it is. You see it's usually about ________ on the mountains than in the valley.

[　　]

A．three degrees colder

B．three degrees as cold

C．three degree colder

D．as cold three degree