It was raining heavily outside.As Lily reached the door,she seriously thought of asking him to stay until the rain＿＿.

A.made up　 B.went back C.died down D.die out

_______________________（大学毕业生被派遣去教书）in the poor mountainous areas will make a difference to the local students’ education.(graduate)

Anyone who has ridden on a railway train knows how rapidly another train flashes by when it is traveling    .
A. in the same direction         B. in the opposite direction   
C. toward the opposite direction        D. against the same direction

—May I open the window to let in some fresh air?

—___________

A. Come on　　 　　 B. Take care　 　　　C. Go ahead!　 　　　D. Hold on!

The seller would sell the skirt for 50 dollars, but the customer ___ only half the price, and finally they agreed ____ the price.

A. supplied; on　　 B. charged; on

C. offered; with　　 D. offered; on

After the new technique was introduced, the factory produced______ tractors in 1998 as the year before.

　 A. as many twice 　 B. as twice as many

　 C. twice as many 　 D. twice many as

—You look so upset. What’s wrong with you?

　 —The door _______. Can you help me?

　 A．won’t open B．won’t be opened　 C．can’t open 　　 D．can’t be opened

_______ she was invited to the ball made her very happy.

A. What　　　　　　　　　　 B. That

C. When　　　　　　　　　　 D. Because

He realized she was crying ________ what he had sad.

A. because　　　 B. because of　　　　 C. as　　　　　 D. since