问题
选择题
If parents never expect their children to be helpful at home, they are sure _____.[ ]
A. not
B. not to
C. not to be
D. not be that
答案
答案：C
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If parents never expect their children to be helpful at home, they are sure _____.[ ]
A. not
B. not to
C. not to be
D. not be that
答案：C