I.单句填空 用括号内所给动词的适当形式填空。
1．－Lucy，how are you getting on with your composition?
－I have rewritten it so many times that I wonder if I ________(finish) it.
答案：will finish
2．－Bob entered for the marathon race last week.
－No wonder，he ________(enjoy)that kind of sports.
答案：enjoys
3．－Will you accompany me to the doctor’s at 3 o’clock this afternoon?
－I’m afraid not.I ________(attend)a lecture on environmental protection in the hall then.
答案：will be attending
4．I had wanted to help you last night but I couldn’t spare any time，for I ________ a composition which I have to hand in this morning.
答案：was writing
5．If he ________(listen) to me then，he would be better now.
答案：had listened
