题目内容
从A-G中选出可以完成对话的最佳选项。选项中有两项为多余选项。
A:It is a lovely weather, isn't it?
B:Very lovely.
A:The air today is nice and clean.But it was bad years ago.
B:(1)________ There was air pollution then.
A:But how did that happen?
B:(2)________ And the wind blows the sand.
A:Yes.But how did the air become clear?
B:You see,(3)________ It has become a green city.
A:I love trees.(4)________ They cool the air as well as clean it.
B:People in this city must have done a lot to make the city clean.(5)________
A:I agree with you.It is our duty.
答案:D,B,E,A,F
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