单选题
18.
______for your laziness, you could have finished the assignment by now.
A、
Had it not been
B、
It were not
C、
Weren't it
D、
Had not it been
【正确答案】
A
【答案解析】
从you could have finished the assignment by now可以判断条件句应是与过去事实相反，故选A。
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