单项选择题

In the West children begin to study their native languages and a foreign language to gather in primary school and begin __________ in middle school

A．third
B．a third
C．the third
D．thirdly
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单项选择题
We can sail there in an hour, if the wind is favorable __________ us．
A．of
B．at
C．with
D．to
单项选择题
“You missed a golden opportunity”“Yes，I __________ that job when it was offered.”
A．shall take
B．should take
C．shall have taken
D．should have taken
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