1 . —Mike, where is your father?
—He ________ to New York on business. He ________ the airport at five in the morning.

A．has gone; has left for	B．has been; has left for
C．has gone; left for	D．has been; left for

2 . Which course did your teacher recommend ______ you?

A．for

B．of

C．to

D．with

3 . The school is ______ for the safety of all the students.

A．responsibility

B．responsibling

C．responsibled

D．responsible

4 . We can try a course for two weeks after we sign up ______ it. After that, we cannot change it.

A．with

B．of

C．in

D．for

5 . I think he is ______ to smoking. He just can not seem to quit.

A．addicted

B．attracted

C．addicting

D．attracting

6 . I’m good at maths, so my teacher recommend that I ______ advanced maths in my first year.

A．choose

B．choosed

C．chosen

D．have chose

7 . The research has focused ______ the relationship between a teenager’s sleep and health.

A．on

B．for

C．to

D．with

8 . His goal is to make a film that is suitable ______ children.

A．for

B．in

C．with

D．to

9 . “How do you do?” she said ______.

A．formal

B．formally

C．informally

D．informal

10 . We shall never know whether this happened ______ design or not.

A．by

B．in

C．with

D．to