问题

It is _____ English is being widely used at present _____ we learn it hard.[ ]
A: because; why
B: because; that
C: since; why
D: since; that
B: because; that
C: since; why
D: since; that
正确答案是:
同类题型
The days we look forward to ____at last
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Who’s the greatest man — Stephen Hawking, I think.
You never think of others ! You kept mewaiting for two hours.—I’m sorry that you _________ think so.
d building, behind _______ was afamous church, was _______ we used to work.