问题
Have you ever seen any trees ________ leaves were black because of the polluted air
A:couldn’t, intended to have come
B:didn’t, intended to have come
C:couldn’t, intended to come
D:didn’t, intended to come
B:didn’t, intended to have come
C:couldn’t, intended to come
D:didn’t, intended to come
正确答案是：
同类题型
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