There is a discount for the cost of the 6-week English course _____ you pay in advance.

Why are the students working so hard these days? — _____ ready for the coming entrance examination. [ ]

_______ do you use the Internet —Twice a week.

He got completely______ when he saw both Lucy and Lily, who are twin sisters.

Excuse me, I bought a computer from your shop last week, but it doesn’t work now.—It doesn’t matter, madam. It _________ today.