单项选择题

A．Approach the problem in a logical fashion.
B．Time how long it takes to solve the problem.
C．Be patient with the problem.
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单项选择题
A．He only wanted to come on Sunday.B．He would be very busy on Saturday.C．His car was broken down.
A．He only wanted to come on Sunday.
B．He would be very busy on Saturday.
C．His car was broken down.
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