试题 试卷
题型：单选题 题类：常考题 难易度：普通
——________. Though I know they're bad for our health.
—____.
—__________. I'm too tired and I'll go to bed early.
— ____.
It seldom snows heavily in Shanghai, {#blank#}1{#/blank#} {#blank#}2{#/blank#}?
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