-What is the __________ of the polar bear?-It __________500 kg.
——Mr. Li is ill in hospital. His daughter is looking after him.—— .
——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.—— .