题目内容

用恰当的词语填空,完成对话。每空一词。
A: Hi! Linda!
B: Hi! Michael!
A: What bad 1_______! There is so much sand and dirt in the air.
B: So it is. Have you 2_______ of the sandstorm?
A: No, I haven't. What's that?
B: There is lots of sand flying in the air when the wind is 3_______ strongly.
    So we can't see anything clearly outside.
A: But what 4_______ these sandstorms?
B: People do something harmful to destroy the environment, such as cutting down too many trees.
A: That's too bad. I think we still need to work hard to 5_______ our environment.
B: Yes, I agree with you.
1. weather  2. heard   3. blowing   4. causes   5. protect
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