问题补充:
It is necessary for us good habits in our daily life.
A. keep
B. to keep
C. keeping
D. kept
答案:
A. keep
(答案→)B. to keep
C. keeping
D. kept
解析:考查句型:it’s+形容词+for sb to do sth表示对某人来说做某事怎样。It 作形式主语,真正的主语是后面的不定式,句意:在我们的日常生活中对我们来说保持良好的习惯是必要的。所以选B。
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