Plastic bags have caused serious environmental pollrtion,___

Plastic bags have caused serious environmental pollrtion,____.
A.haven't they
B.have they
C.don't they
D.do they

刻木当严亲 1年前已收到3个回答举报

4181liu 幼苗

共回答了20个问题采纳率：90% 举报

选择A这里考察的是反义疑问句因为前面是have caused这个完成时,而且是肯定,所以后面部分应该是否定的,而且是havn't they,选择A

1年前

katrna1981 幼苗

共回答了217个问题举报

A.haven't they
说明：
反意疑问句，前肯后否，且是现在完成时态。

1年前

快乐粉色幼苗

共回答了1540个问题举报

1年前

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你能帮帮他们吗

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