单项选择题

Cooked vegetables are also valuable sources of certain vitamins and minerals, if the juice is eaten and if not cooked ______ .

A．too long a time
B．a long time too
C．much time long
D．long much time
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单项选择题
He promised me a letter; he ought to ______ it days ago.
A．have written
B．write
C．had written
D．be writing
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