It is well known to us all that a lot of rivers _______by factories.
| A．are polluting | B．have been polluting |
| C．are being polluting | D．are being polluted |
—Patrick has won $ 1,000．
—_____? He isn’t any happier．
| A．So what | B．So where | C．So why | D．So how |
There are severalplans here. Which one do you like best?
| A．alternative | B．conservative | C．passive | D．primitive |
—How much shall I pay for the food?
—You.This is free of charge.
| A．mustn’t | B．needn’t | C．shouldn’t | D．couldn’t |
The couplesome money every month for their children even though their income can only make ends meet.
| A．put off | B．put up | C．set down | D．set aside |
—Do you think the weather will be all right in the coming summer vacation?
—No,we’re lucky. The newspaper says it’ll be very hot anyway.
| A．if | B．though | C．unless | D．as |