问题

It had been snowing heavily for two days, ____all roads and streets.[ ]
A: to block
B: having blocked
C: blocking
D: blocked
B: having blocked
C: blocking
D: blocked
正确答案是:
同类题型
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Hi, John. Do you know Mary–Yes. The girl red is Mary.
My dream is to be _________ art teacher. What’s your dream—- I want to be _________ nurse.