To save energy, people have to （ ） their electricity consumption.

There are two spare rooms in the building; neither of （ ） has been provided with modern facilities.

Richard is American, John is British—they have different （ ）.

（ ） bad news it is! We must try our best to help them out of the difficulty.

Thank you for your letter of May 6, in which you _____ about the bicycles of Model 897.

Without your instruction, I （ ） such great progress.

As a Chinese proverb goes， a heavy snow _____ a good harvest year.

By this time next week, the winners _____ their awards.

It is the third time that she has won the race, _____ surprised us all.

The school isn’t the one I really wanted to go, but I suppose I’ll just have to （ ） it.

The father went to the door in （ ） to a knock from outside.

Any student who_____his homework is unlikely to pass the examination.