单项选择题

Susan in doing the experiment again though she had failed many times.

A．resisted
B．insisted
C．assisted
D．persisted
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, you are leaving tomorrow, we can have dinner together tonight.
A．For
B．Since
C．Before
D．While
单项选择题
Early to bed and early to rise a man healthy and happy.
A．make
B．has made
C．makes
D．will make
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