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if you are___ a subject,working hard and asking a teacher fo

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if you are___ a subject,working hard and asking a teacher for advice can help
A weak in
B harmful to
C interested in
D pleased with
working in noisy conditions for a long time is bad for our hearing
A sour
B deaf
C grey
D well
there are several chemical factories pouring waste water into the streams .they may cause ___
A air pollution
B soil pollution
C noise pollution
D light pollution
The train is leaving right now,but David hasn it arrived yet
A CAME
B will come
C would come
D had come
if you are___ a subject,working hard and asking a teacher fo
1.C.be interested in 对...感兴趣,其他的答案不符题意
2.B.在吵闹的环境中长时间工作能使人们变聋.
3.B.工厂往河流里倾倒脏物,能够污染土壤
4.C.在间接引语中将来时要变成过去将来时