—What’s _____most useful invention in the 20th century?
—_____ computer, I think.
A. the, A B. a, A C. the, The D. /, The
— Tom, you are going to buy a new flat here, aren’t you?
— Yes, but I can’t _____an expensive one.
A. spend B. cost C. pay D. afford
—Open the window, please.
—Certainly. Which one? _____ beside the door?
A. One B. The one C. Ones D. The ones
—I’m going to take my driving test tomorrow.
—_____!
A. Congratulations B. Cheers C. Good luck D. Come on
I felt it hard to keep up with my classmates. But when I want to _____, my teacher always encourages me to work harder.
A. go on B. give up C. run away D. give back
Bill won’t make any progress_____he studies harder than before.
A. if B. when C. because D. unless
