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 |
I’ll be back _____ 5 o’clock tomorrow afternoon.
| A．about | B．around | C．until | D．for |
Ahead of me I saw a woman _____ I thought was my aunt.
| A．who | B．whom | C．of whom | D．whose |
I’m sure the red team will ______ the game.
| A．win | B．beat | C．defeat | D．succeed |
The Canadian friends have given us a lot of books, few of _____ a bit difficult for us.
| A．them are | B．that is | C．which are | D．which is |
Would you like to _____ us in our discussion?
| A．take part in | B．join | C．taking part in | D．joining |