Mr Liu is ____ unusual teacher. He has written _____ useful book for his students.
Finish your homework first, then you'll surf the Internet for half an hour.
---Mum, I cut myself just now. ----You ______put some medicine on it.
You ______ be polite to the old man.
--- Tom, where is your father? --- I’m not sure.He_______ in his office.
This Japanese dictionary Ellen’s. She is only person learning Japanese in our class.