问题
选择题
Tom rushed into the house______ his mother was cooking.
A．as
B．before
C．while
D．after
答案
答案：C
考查连词的用法。从句意可以看出rushed into the house与was cooking是同时发生的，故答案选C，意为“当……时候”，引导过去将来时。
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Tom rushed into the house______ his mother was cooking.
A．as
B．before
C．while
D．after
答案：C
考查连词的用法。从句意可以看出rushed into the house与was cooking是同时发生的，故答案选C，意为“当……时候”，引导过去将来时。