young trees have been planted along the north of China these years.
— 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. — _____ !
Who listens _____, in your class?