He isn't in the school ,I think he ___ be ill .A.need B.shall C.m_英语解答

He isn't in the school ,I think he ___ be ill .
A.need B.shall C.must D.havt to
,为什么?

人气：179 ℃　时间：2020-03-20 21:04:17

解答

表示肯定推测
He isn't in the school
他不在学校,所以一定是病了