赞题库-背景图
单项选择题

A．over
B．out
C．off
D．for
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热门试题

单项选择题A．knowingB．to knowC．they knowD．known

A．knowing
B．to know
C．they know
D．known

单项选择题A．is beingB．areC．have beenD．is

A．is being
B．are
C．have been
D．is