问题描述：
用have to或must填空.
He says he_______ work hard.
My brother is ill.I_______telephone the doctor.
Sorry,I _______ go home now.
I _______ water the garden now.It is very dry.
We _______help each other.
He says he_______ work hard.
My brother is ill.I_______telephone the doctor.
Sorry,I _______ go home now.
I _______ water the garden now.It is very dry.
We _______help each other.
问题解答：
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