题目内容
Joan stood outside a shopping mall for a long time, as if ________ somebody．
[ ]
A．to wait for
B．waiting for
C．waited for
D．having waited for
答案：B
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题目内容
Joan stood outside a shopping mall for a long time, as if ________ somebody．
A．to wait for
B．waiting for
C．waited for
D．having waited for