He can't be at school,___?
don't think he can ___ at school now.
He isn't at school .I think he ( )be ill.can,shall,must,has
he isn't at school i think he -----be ill
I don't think he can ( )at school.
There can't be anyone at home,___?
Bob____at school.He is at home.【can't,isn't,aren't,don't,doe
He can't ___ (ski),but he is good at ___(skate).适当形式填空
He can't be at home.为什么在at前面有be?什么情况下要加Be?
He busy (some school things )at the store.___ ___he buy at t
Bruce isn't at home now.___ he is at school.
Tom _______(can’t/mustn't) be at home .he said he would go t
1.He ___ Mr.Black.He is taller.(用can't,can't be,must,must be