问题
____in smog as the pollution worsened, many cities of the Yangtze River Delta region had to close several freeways.
A:Blanketed
B:Having blanketed
C:Being blanketed
D:Blanketing
B:Having blanketed
C:Being blanketed
D:Blanketing
正确答案是：
同类题型
Bob is _______ an English class. Histeacher is talking ________ English.
Miss Li is ______ favorite teacher .She likes _______.
The students entered the classroom，smiling and________，and ______ down to have their lessons.
Are you going to participatein the speech contest– ____ How wonderful anopportunity!