单项选择题

Careful surveys have indicated that as many as 50 percent of patient do not take drugs ______ directed.

A．what
B．so
C．which
D．as
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单项选择题
Those who receive your invitation only two or three days before the actual wedding day have good reason to feel that they are not highly
A．expected
B．regarded
C．worshipped
D．admired
单项选择题
The shoemaker can mend whatever______.
A．which needs mending
B．needs to be mended
C．it needs mending
D．that needs mending
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