赞题库-背景图
单项选择题

The fact remains ______we are behind many others.

A．that
B．why
C．where
D．how
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热门试题

单项选择题______your help we were successful.

A．According to
B．But for
C．Owing to
D．As for

单项选择题Mr. Smith ______working till he was seventy years old.

A．kept up
B．kept on
C．kept to
D．kept out