— Grandpa has changed a lot.
— So he has. He used to _________ games with the children.
A. play B. playing
C. played D. plays
—________do you prepare for an exam?
— By going over all my notes.
A. How B. Why C. When D. Where
—What’s wrong with you?
—I wasn’t careful enough and _______an old man while walking along the street.
A.knocked off B. knocked up
C. knocked into D. knocked out
—Shall we drink the tea now?
—No, the tea should be ______in the water for some time before you drink it.
A.stayed B. staying
C. kept D. keeping
—I didn’t find my pen yesterday.
—Sorry, I took your pen __________.
A.in mistake B. for mistake
C. by mistake D. for mistakes
We’ll be paid _______the amount of work we do.
A. including to B. according to
C. thanks to D. Because
