单项选择题

We hope that such a book ______ is helpful is on sale now.
A) that C) which
B) as D) what

A．We hope that such a book ______ is helpful is on sale now.
B．that
C．as
D．which
E．what
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单项选择题
The police ______ for the thief in the region at the moment. A) is searching C) searched B) are searching D) has searched
A．The police ______ for the thief in the region at the moment.
B．is searching
C．are searching
D．searched
E．has searched
单项选择题
I ______ something about him, but I do not know much. A) told C) have been told B) had been told D) have told
A．I ______ something about him, but I do not know much.
B．told
C．had been told
D．have been told
E．have told
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