It is wise to have some money________ for old age.

We've invited Mr and Mrs Brown to dinner. But we'll have to________ because of the baby's sickness.

—Hey,  Guess what? I've got a pay rise!
—This ________ a celebration! Let's go to sing karaoke tonight.

It is important to ________ the latest research.

We should never forget those who _____ the success of the revolution.

_____, or we will be late for the meeting!

I listened carefully to his long boring speech, but could not ______what he was talking about .

Large quantities of solid fuel ______consumed every day and too much carbon dioxide is sent into the air, which in turn _______ the going up of temperature.   

My father _____ take a nap after supper, but now he's _____ taking a walk.

One of the young man's paintings has been _____ by some experts of the Art Field.