Everybody has _____ responsibility to save water, if future generations are to enjoy
____ similar standard of living to the one we enjoy now.
| A．the; / | B．a; a | C．/; the | D．a; the |
All of the flowers now raised here have developed from those _______ in the forest.
| A．once they grew |
| B．they grew once |
| C．they once grew |
| D．once grew |
The famous basketballer, _______ tried to make a comeback, attracted a lot of attention.
| A．where |
| B．when |
| C．which |
| D．who |
I saw some trees the leaves of _____ were black with disease.
| A．that |
| B．which |
| C．it |
| D．what |
We wanted to get home before dark, but it didn't quite as planned.
| A．make out | B．turn out | C．go on | D．come up |
All that can be eaten _______ eaten up.
| A．are being |
| B．has been |
| C．had been |
| D．have been |