He isn't at school today.I think he _____be will

He isn't at school today.I think he _____be will he isn't at school i think he -----be ill he isn't at school.i think he ------be ill A.has to B.shall He isn't at school .I think he ( )be ill.can,shall,must,has -Tom isn't at school today.He ____ ill at home. -I'm not sur He isn't in the school ,I think he ___ be ill . He isn't in the school .I think he __be ill. 新初一英语短文理解It is Tuesday today.Liu Fang isn't at school.But he I don't think he can （ ）at school. Where is Tom? He hasn't come to school today. I think he ___ He hasn't come to school today.I think he ( ) be ill. He isn't in the school .I think he_____be ill.A.must.B.can C