—Whose T—shirt is this? Is it John's?—It ______ be his. It's too small for him.
I don’t want to go to the museum, it’s too_______.
— Where did they go ________ vacation? —They went to Shanghai.
— Did your mother come back late yesterday? —No, she _______. She never _______ back late.
He decided _______ a letter to his uncle In New York City.
— I’m going to Qingdao for the summer holiday. — _____ !