Our teachers often advise us ________ carefully in class.
——Did you have a good weekend?—— .We enjoyed ourselves in an amusement park.
——Tina, is this schoolbag? ——Yes,it’s mine.
——Must I leave the room now?——No,you .
——You have a beauifuln voice. I love your songs.—— .
——I cleaning my bedroom. It’s clean now.——Wow.When you it?