1 . He does everything well because he is always ________ (认真的) about what he does.

2 . —Mom, I won the first prize in the English speech contest.
—Fantastic. I am really ________ you!

A．interested in

B．afraid of

C．serious about

D．proud of

3 . —Are you ________ about selling your house?
—Yes. I need money to do business.

A．serious

B．afraid

C．strict

D．nervous

4 . I think you should be more ________ (认真) about your business.

5 . Liberal arts colleges（文理学院） in the U.S. are often more s________ about the students they enrol than larger universities and so they are harder to get into. Due to their smaller size, the demand for places is always far greater than the number of places available.

6 . 当他意识到约翰对这件事是认真的时， 他停止了笑。
He stopped laughing when he realized John was ________it.

7 . If you are ________ about any goal, you will be successful some day.(认真的，严肃的)

8 . —Do you mean you will join the club?
—Yes, I am _______ it. I am interested in all the activities the club provides.

A．tired of

B．careful with

C．serious about

9 . We should take our study seriously.(改为同义句)
We should ________ ________ ________ our study.

10 . The boy is ________ ________（对……认真）chess.