完形填空:too much homework is not the only reason()students go to bed late,A.that B.w

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完形填空:too much homework is not the only reason()students go to bed late,A.that B.w

why
reason做先行词,用why引导
如果后面有for 的话,才用that

that!

Why

语感告诉我要选why

why,定语从句中,先行词reason理由,要用why,如果是表语从句用that