--Who is knocking at the door?-It ______ be Mr. Wang. He always knocks at the door so loudly.
---________ --- K-E-Y, key.
Lin Shuhao is in ________.
Mum, this is ________ teacher. ________ name is Li Hui.
---This is my good friend(朋友). ---________ name is Tony.
--- What color is ________ pencil? ---It’s red.