单项选择题

—You'd better （）work too hard like this. —I see. You me……

—You'd better （）work too hard like this.
—I see. You mean （）too hard makes one tired and ill.

A. not ; work
B. don't ; working
C. don't; to work
D. not; working

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单项选择题I found the book I （）I （）in the teachers' room! What a happy afternoon!

A. think; have found
B. thought; had lost
C. saw ; put
D. thought ; had taken