问题
选择题
一When did you learn the news that Obama made a trip to Canada as President?
一_______ was on my return．
A．That
B．It
C．There
D．This
答案
B.
根据句意可以得知，问的是时间，it可以指代时间，属于it的实指用法。
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一When did you learn the news that Obama made a trip to Canada as President?
一_______ was on my return．
A．That
B．It
C．There
D．This
B.
根据句意可以得知，问的是时间，it可以指代时间，属于it的实指用法。