问题

_ reason you may give , you ought notto have left homework unfinished.
A:What
B:No matter
C:However
D:Whatever
B:No matter
C:However
D:Whatever
正确答案是:
同类题型
Can you think of some cases______ drivers obviouslyknew the traffic rules but he didn’t obey them.
e another wonderfuldiscovery, _________ of great importance to science.
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