单项选择题

The reason ______ they died was lack of medical care.

A．which
B．for which
C．in which
D．why
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单项选择题
Such ______ the case, there are no grounds to justify your complaints.
A．is
B．was
C．is being
D．being
单项选择题
This kind of cloth ______ well and ______ long.
A．is washed, lasts
B．washes, lasts
C．washes, is lasted
D．is washed, lasted
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