问题
选择题
—Where’s your mother ?
--She has gone shopping with my aunt . She’ll be back ________.
A．in a while
B．for a which
C．once in a while
D．a while
答案
答案：A
考查情景交际和短语辨析。in a while“一会儿，过不久”；for a while“暂时”；once in a while“有时”。句意“你的妈妈在哪里？”“他和阿姨去购物了，一会儿就回来。”in a while与将来时连用。故选A。