单项选择题

It was because he was ill ______ he didn't go to school.

A．that
B．when
C．then
D．so
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单项选择题
There are few places in this country ______ wheat can't grow.
A．where
B．which
C．when
D．if
单项选择题
I remember her face, but I can't ______ where I met her.
A．reflect
B．react
C．recall
D．remind
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