He is wearing sunglasses to ______his eyes from the strong sunlight.
| A．protect | B．hold | C．stop | D．prevent |
Quite a few tall buildings _______ the last two years.
| A．have been put up | B．were put up | C．had put up | D．put up |
Man-made-satellites______ into space by many countries.
| A．was sent up | B．is sent up | C．have been sent up | D．has been sent up |
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.
| A．to do | B．to make | C．how to do | D．how to make |
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