单项选择题

One cannot be too careful, ______

A. can one
B. can he
C. can she
D. can they
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单项选择题
Henry is so arrogant after being promoted president of the company _______ accept the invitation to his former coworker's wedding.
A. in order to
B. as to
C. as to not
D. as not to
单项选择题
Mary could be a very attractive girl but she______about her clothes.
A. cares little
B. cared little
C. had cared little
D. would care little
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