填空题

Time is valuable but limit. There’s a famous saying, (76)
"Time is money", this shows the importance of time. When (77)
time has gone, it will never return back. (78)
It is a pity when many people make poor use of time. They (79)
spend precious time oversleeping, drinking and traveling. (80)
They don’t realize wasting time is equal to wasting parts of their life. (81)
They always regret having made a little achievement so tar. (82)
Therefore, we should form the habit of value time. Do not (83)
put off what can be done today until tomorrow. Laziness (84)
will not only bring us failure, but also lead us on the road (85)
of poverty and even death.

【参考答案】

on改为to。
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单项选择题
49()

A.in 
B.at 
C.on 
D.to