The naughty boy spends most of his time playing computer games ______ his lessons.

Hou Yifan comes back to Xinghua ___________ Sunday.

_____leaves the office last must close allthe windows and the door.

I’m too busy preparing the exam. Could you do_______to help me—Of course. I can do _______for you if you want me to.

Can we finish the work with ______ money and ______people—I’m afraid it’s impossible.