About how many elements _____ make up most of the substances we meet in everyday life
| A．it is which | B．what it is | C．is it that | D．it is that |
The number of foreign students attending Chinese universities____rising steadily since 1997.
| A．is | B．are | C．has been | D．have been |
The street was named after a great man______ his great contributions to the city.
| A．in honor of | B．instead of | C．in case of | D．in need of |
The dustmen said that they would not stop strike until the government______ to them.
| A．gave up | B．gave out | C．gave away | D．gave in |
It seems that the more lovely an animal is , the more it _____our health. As the saying goes, “if you want to be loved, get a dog.”
| A．harms | B．troubles | C．benefits | D．treats |
It was playing computer games that cost the boy plenty of time that he _____have spent doing his lessons
| A．might | B．must | C．could | D．ought to |