问题

But for electricity, human life _____ so easy today.
A:isn’t
B:utwould not be
C:will not be
D:would not have been
B:utwould not be
C:will not be
D:would not have been
正确答案是:
同类题型
The bald eagle_____ the United States.
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I wonder why Jenny to us recently. We should have heard from her by now.[ ]
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