问题
选择题
— Do you have to take care of your mother at home ?
— Yes , I ____ .
A．do
B．have to
C．have
D．shall
答案
B。
回答情态动词 have to 的一般问句时肯定用 have to 或 must , 否定用 don''t have to 或 needn''t。
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— Do you have to take care of your mother at home ?
— Yes , I ____ .
A．do
B．have to
C．have
D．shall
B。
回答情态动词 have to 的一般问句时肯定用 have to 或 must , 否定用 don''t have to 或 needn''t。