— Look at the boy playing basketball on the ground. Is it George?
— It ________ be him. He told me he would play basketball after class, but he’s not sure.
A. mustn’t B. must C. can’t D. may
— Look at the boy playing basketball on the ground. Is it George?
— It ________ be him. He told me he would play basketball after class, but he’s not sure.
A. mustn’t B. must C. can’t D. may
D