单项选择题

The old gentleman never fails to help ______ is in need of his help.

A．whom
B．who
C．whoever
D．whomever
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单项选择题
15（）

A．covered
B．formed
C．maintained
D．adapted
单项选择题
14（）

A．as long as
B．as if
C．so that
D．such as
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