—How’s your tour around the North Lake? Is it beautiful?
—It __________ be, but it is now heavily polluted.
| A．will | B．would |
| C．should | D．must |
The experiment has_________ the possibility of the existence of any life on that planet, but it does not mean there is no life on other planets.
| A．found out | B．pointed out | C．ruled out | D．carried out |
---I haven't got the reference book yet, but I'll have a test on the subject next month.
---Don't worry. Youhave it by Friday.
| A． | could | B． | shall | C． | must | D． | may |
Thousands of foreigners wereto the Shanghai World Expo the day it opened.
| A． | attended | B． | attained | C． | attracted | D． | attached |
--why, Jack, you look so tired!
--Well, Ithe house and I must finish the work tomorrow.
| A． | was painting | B． | will be painting | C． | have painted | D． | have been painting |
The doctor is skilled at treating heart trouble and never accepts any gift from his patients, so he has a very good.
| A． | expectation | B． | reputation | C． | contribution | D． | civilization |