Some pre-school children go to a day-care center, __________ they learn simple games and songs.
| A．then | B．there |
| C．while | D．where |
—Do you think our teacher is ？
—Yes， he always corrects our homework and prepares his lessons .
| A．careful； careful | B．careful； carefully |
| C．carefully； carefully | D．carefully； careful |
Only by reading more books improve your reading skills.
| A．you can | B．can you | C．do you | D．you do |
—Sir， can I pass the examinations this time？
—That depends on you work hard enough or not.
| A．what | B．that | C．whether | D．how |
The unemployment rate in this district from 6% to 5% in the past two years.
| A．has fallen | B．had fallen |
| C．is falling | D．was falling |
—What do you think we can do for our aged parents？
—You do anything except that you visit them as often as possible.
| A．don’t have to | B．oughtn’t to |
| C．mustn’t | D．shouldn’t |