单项选择题

Although Professor Green's lectures usually ran (over) the (fifty-minute) period, (but none) of his students (ever) objected as they found his lectures both informative and interesting.

A．ran over
B．fifty-minute
C．but none
D．ever
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单项选择题
(As far as) I am concerned, his politics (are) rather conservative (compared) with (politicians).
A．As far as
B．are
C．compared
D．politicians
单项选择题
(Because) of the recent accidents, our parents forbid my brother and me (from swimming) in the river (unless) someone agrees (to watch) over us.
A．Because
B．rom swimming
C．unless
D．to watch
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