We shouldn’t spent our money testing so many people, most of ___ __ are healthy.
| A．that | B．which |
| C．what | D．whom |
AIDS is said__________the biggest health challenge to both men and women in that area over the past few years.
| A．that it is | B．to be | C．that it has been | D．to have been |
______ only 20 minutes to go before the train left, I felt uneasy in the taxi to the railway station.
| A．For | B．With | C．As | D．Because |
If you can make what the teachers teach ________, you’ll make rapid progress.
| A．yours | B．yourself | C．you | D．your |
_______ has recently been done to provide more buses for the people, a shortage of public vehicles remains a serious problem.
| A．What | B．Though what | C．In spite of what | D．However what |
When a giraffe has ______ drink, it has to stand with its front legs wide apart in order to reach ______ water easily.
| A．不填；不填 | B．a; the | C．the; 不填 | D．不填；the |