第二部分英语知识运用（共两节，满分45分）
第一节 ：单项填空（共15小题；每小题1分，满分15分）
从所给的四个选项(ABC和D)中，选出可以填入空白处的最佳选项。
24. The two presidents agree with each other on the whole, but much remains ______ at the following meeting.
A. to discuss B. discussing
C. to be discussed D. discussed
25. --- What happened to Mr Smith early this morning?
--- Oh, he was seen ______ down and the driver ______ away.
A.knock, drive B. knocking, driving
C. knocked, drove D. to knock, driven
26. When I went in, they were ______ in a heated discussion.
A. absorb B. absorbed C. absorbing D. being absorbed
27._______ you dare to overcome difficulties with your studies,______ make great progress in the future.
A．Only if, can you B．If, can you
C．Only if, you can D.If, you can to
28. --- Why did you ______ the fourth paragraph of your rewritten composition?
