问题

The humans are destroying nature day by day,__________of course,will cause severe punishment from it sooner or later
A:who
B:when
C:on which
D:Which
B:when
C:on which
D:Which
正确答案是:
同类题型
_____ all your school things, Jane! I hate them here and there. —–OK, Mum.
.—-I can’t find Jack. Where did you see him this morning?—-It was in his factory _______he worked.
If you don’t go to see the film this evening, .
u have any idea why the engineer resigned—No. In fact, everyone is ____about it.