The _______ of being late for school is the busy traffic(交通).

A、report B、answer C、reason

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補(bǔ)全對(duì)話(共15分)

(A) 從所給句子中選擇恰當(dāng)?shù)木渥油瓿上旅娴膶?duì)話

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L： Great!

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