Lots of waste has been dumped into the river,which has led to________.A.lots of fish having been killedB.kill lots of fishC.lots of fish being killedD.lots of fish to kill
参考答案:
You’ll sound a lot more polite if you make a request ______..
You’ll sound a lot more polite if you make a request _______ a question. A.in the form ofB.in reply toC.in preparation forD.in return for