If I had remembered （ ） the window, the thief would not have got in.

Dinner will be ready _____. Let’s go and wash our hands.

Please （ ） the water tap when you have finished your washing．

I decide to leave the company next month, where I _____ for exactly three years.

I don’t know whether he is still （ ） in collecting coins. He used to be, but that was several years ago.

The committee members meet _____ every Saturday and Sunday mornings.

The purpose of the conference is to （ ） the friendship among the Asian countries.

The defense computers calculate way to （ ） the enemy missiles.

We tried to find a table for seven, but they were all （ ）.

I am sorry that he （ ） in such poor health.

The computer doesn’t work well， so something （ ） wrong.

（ ） relatively costly, the engine is highly efficient and needs servicing infrequently.