—Mum , what did the doctor say ?—He advised me to live _________ the air is fres

题干

—Mum , what did the doctor say ?
—He advised me to live _________ the air is fresher.

A．if

B．because

C．where

D．when

上一题下一题 0.65难度单项选择更新时间:2019-03-01 08:46:39

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