—I hate cities . The roads are dirty and they are always crowded.
—Do you know the world’s population has grown to_________？
more than six times what it was in 1800
six times more as what it was in 1800
more than six times large as it was in 1800
D. more than six times as large as in 1800
---I didn’t go to the party yesterday because my car broke down.
---You ______ mine. I wasn’t using it.
| A．ought to borrow | B．would have borrowed |
| C．had better borrow | D．could have borrowed |
---They are quiet, aren’t they?
---yes. They are accustomed ____at meals.
| A．to talking | B．to not talking | C．to not talk | D．to talk |
_____, I got better and returned to work.
| A．Accidently | B．Normally | C．Eventually | D．Particularly |
It is already 10 o’clock. I wonder how it ______ that she was two hours later on such a short trip.
| A．came over | B．came out | C．came about | D．came up |
--Why does the lake smell terrible?
---Because large quantities of water ______.
| A．have polluted | B．is being polluted |
| C．has been polluted | D．have been polluted |