北京大学15秋《大学英语3》作业2答案
1.鼓励独立完成作业，严禁抄袭。
词汇与结构
Skating is such a _____ sport in the northeast of China that almost everybody there knows how to skate.
A. A. likely
B. B. famous
C. C. popular
D. D. long
正确答案：C
大学英语3答案
2.The teacher suggested that they _____ in the exercise at once.
A. A. had handed
B. B. should have handed
C. C. handed
D. D. hand
正确答案：D
3.He did not go to school yesterday because he _____ his father who was ill.
A. A. must have looked after
B. B. would have to look after
C. C. had to look after
D. D. should have looked after
正确答案：C
4.After walking for half an hour, she realized that she _____ in the wrong direction.
A. A. had been walking
B. B. has been walking
C. C. walked
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