单项选择题

A．He had better assess his own ability.
B．He should try to solve some easier problems now.
C．He must study hard to solve the difficult problems.
D．He should find some more complicated problems to solve.
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单项选择题
A．His boss doesn’t agree. B．He has to pay the tuition fee first. C．He has chosen some part-time courses. D．He can’t afford to study without salary.
A．His boss doesn’t agree.
B．He has to pay the tuition fee first.
C．He has chosen some part-time courses.
D．He can’t afford to study without salary.
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