—We're doing a lot to protect our environment, but it is not good enough. —So we should try______ to look after it.
——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. ——.
——Icleaning my bedroom. It’s clean now. ——Wow.Whenyouit?