单项选择题

()second thoughts I'm quite content to stay for the time being.

A.At
B.On
C.In
D.As

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单项选择题

When we plan our vacation, mother often offers()suggestions.

A.careful
B.practical
C.effective
D.acceptable

单项选择题

Given these conditions, there will not be()room left in one's brain for ()rational (理智的) thought.

A.a; the
B./; a
C.the; /
D./; /

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