1.    English and physics are the most _______ subjects to some students.

A. challenging B. challenged C. to challenge D. dying

Mary had promised to give me a ticket for tomorrow. She failed, _____.

　　A. either B. though C. but D. too

Once we _____, we should work hard until we succeed.

A. make up our mind B. make our mind C. make up our minds　 D. make our minds

—Why did you leave the room in such a hurry?

— ____my girlfriend.

A. Avoiding to meet　 　　 B. To avoid meeting

C. Avoid to meet 　　 D. To avoid to meet

We don't doubt the a_______ of high education for many young people.

________, you should keep it a secret.

A. If asking　　　　 B. If asked　　 C. If to ask　　　　 D. If being asking

First impressions are the most lasting. After all, you never get _______ second chance to make _______ first impression.

A. a; the　　　　 　 B. the; the　　 　　 C. a; a　　　　　 　 D. the; a

I still remember you, as a student, _________ sweetly.

A. to sing　　　　　 B. singing　　　 C. being singing　　　 D. sing

You have no idea how she finished the relay race　　　 her foot wounded so much.?

A.for　　　　　　　 B.when　　　　　　　 C.with　　　　　　　 D.while

—Why didn’t you go to Mike’s birthday party yesterday?　 —Well, I ______, but I forgot it.

　 A. should　　　 B. would　　　 C. should have　　 　 D. must have