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[单选题]
The reason why he didn’t come to school was ______ he was ill.
A.because
B.why
C.how
D.that
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A.because
B.why
C.how
D.that
A.to do
B.doing
C.doing it
D.to
I don’t know the reason he was absent.
A、why
B、because
C、which
D、as
A: for
B; why
C; that
The reason why he didn’t come to school was _________ he was ill.
A、because
B、why
C、that