Why not use stones to build our new house? A house built of stone does not catch fire as easily as ______ made of wood.
— 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?