--Mr.Black used to be a worker,_________?--Yes,he_______. Now he is a policeman.
He is better at playing badminton. A.is good at B. does better in C. does best in
Kate and I _______ doing ________ homework now.
Do you have __________ to do?
--Tom has been to Beijing before. --________________.
Song Zuying’s ________ is sweet.