A:Is this a model plane?
B:Yes, we all like it very much ________ it's not a real one.
-What is your friend like?
-________.
-Quite well, thank you.
--- Remember, boys and girls. ________ you work, ________ result you will get.
--- We know, Miss Gao.
-It's nearly 6 pm.Will you have supper here?
-Sorry, ________.I have many things to do.
---Listen! Helen is singing in the next room.
---It ______ be Helen. She has gone to Beijing.
---What’s this ______ English?
---It’s a desk
---Must I write all the words now?
---No, you ________.