单选题
It was
when
she was
about
to go
to bed
while
the telephone rang.
A. when
B. about
C. to go
D. while
A
B
C
D
【正确答案】
D
【答案解析】
改为that。这是一个强调句型：it is…that…，此处是对时间状语whenshewas abouttogoto bed的强调。
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