推荐回答（3个）
1.C
对于Must开头的一般疑问句，其意为“某人必须这么做吗？”
其否定回答为No,sb needn't.其意为“某人不需要这么做。”
2.C
can表示可以，may表示可能，must表示必须（语气硬），need表示需要。
按照中文意思即可知道选must
3.C
选项解释同上题。这里选can表示可以的意思。
4.D
对于否定回答No,sb mustn't.其一般疑问句开头一般为May。
其意为——“某人可以这么做吗？”——“不允许。”
5.B
be able to表示可以，有能力去做，一定程度下可等价于can
have better表示最好去做
used to表示曾经做过
would是will的过去式，一般表示曾经打算去做
故选B
6.C
have to表示不得不，其余中文释义上面已经提过。
故选C
7.B
That's all right.表示感谢或道歉。
Yes,I will.意为“我会的。”
Yes,I can.意为“我可以。”
I'm sorry to hear that.表示对对方遭遇的遗憾。
此题最佳选项为B
8.B
I have no idea.意为“我目前没想法。”
Sure,go ahead.意为“请随意使用。”
No,you can't.意为“不，你不能这样。”
Never mind.意为没事；别担心。
此题最佳选项为B
不懂请追问~
C C C D B C B B
第四题的回答用的是must，语气肯定，因此疑问是能不能/可不可以踢足球，回答是不准
C C C A B C B B
play football那道不是很确定
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