The CDs are on sale!Buy one and you get ______ completely free.
Man-made-satellites______ into space by many countries.
I _______ all the words on the black board. May I go home now?copy B. will coup C. copied D. have copied
Nobody knew _______ a living in that country.
The old man needs at most five hour’s sleep a night ,but he__________ for over seven hours tonight.A. has fallen asleep B has slept C has gone to bed D. has gone to sleep
I’m really getting too fat. From now on, I________ more exercise and eat less food.A have done B do C am doing D will do