---________ milk do you want?
---Three.
--- Work hard, or you will fail in the examination.
--- Well, I'll ________.
--- Look, the light in the teacher's office is still on. Mr Li is working there. He always works late at night.
--- It ________ be Mr Li. He has gone to London for a short visit.
--- Must I use both hands when I accept a present from a friend?
--- ________.
---Mr. Li, may I go home now?
---No, you ________. You should sweep the floor first.
--What isit?
--It is________ elbow.
--What do you think of the skirt?
--I like it very much.
--Please ________.
--Is Tom’spencil new or old?
--________.
-- Where's the library?
-- ________ behind the offices.