4 一般现在时与一般过去时作业 用正确的形式填空: 1. Listen! Mary _________ ( sing) now. 2. A young man __________ (run) on the playground now. 3. My mother _________(watch) TV play every day. 4. Old Bush ________(visit) China again last month. 5. I ______ (play) sports every afternoon. 6. Look! Lucy and Lily ____________(read) books. 7. There _______(is) a football match yesterday afternoon. 8. Our class ______( go) to the zoo three days ago.