单项选择题

She remembered several occasions in the past ______ she had experienced a similar feeling.

A．which
B．before
C．that
D．when
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单项选择题
You ______ Mark anything. It was none of his business.
A．needn't have told
B．needn't tell
C．mustn't have told
D．mustn't tell
单项选择题
There are two famous universities close ______ in the northeast of the city.
A．in hand
B．at hand
C．on hand
D．by hand
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