单项选择题
A．
B．
C．
D．
A．
B．
C．
D．
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I wish I could ________ and relive my schooldays; I regret not having tried harder and passed more exams.（ ）
I wish I could ________ and relive my schooldays; I regret not having tried harder and passed more exams.（ ）
A．put the clock back
B．do without
C．cut off
D．put across