单项选择题

I don’t know where the key is, but I suppose I () it at home.

A.could have left
B.should have left
C.must leave

你可能感兴趣的试题

By referring to Chinas re-emergence, the author intends to show______.
A．why there are so many gripes and grumbles
B．the unfairness of the world's labour markets
C．the increased globalization in the world economy
D．the smaller share of income labour can expect to get

A.
A．why
B.the
C.the
D.the

单项选择题

逆向选择是()

A、事前的信息不对称
B、事后的信息不对称
C、事中的信息不对称
D、以上都有可能