— 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.
The doctor said that there was _______ wrong with Jane’s legs. But she could do ______ to help her.
--I think she is ________at dancing than singing. --I think so.
--What you for your vacation? --I plan to visit my grandparents.
-- ? --I have a sore throat.
- How often do you visit your grandparents, Tom ? --__________