问题

an President decided to ______onFriday afternoon after an 18-day campaign against him, ending his thirty-yearrule.

A:step down
B:break in
C:break down
D:step in

正确答案是：

同类题型

we found one lion lyingnear the river, and ____under a tree

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The farmers needed 　　　　 agricultural technology. Therefore, 　　　　 skilled workers were sent there.

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If the dog hadn’t woken us, we wouldn’t have noticed the fire and it ____ to the house next door. [ ]