After supper, the workers kept on ________ till midnight.

Jack narrowly fell off the cliff, but managed to__________ until help came.

“time is knowledge”, but I never seem to have enough of ____. So I am workinghard to save them.

The air pollution is terrible.— It will be worse ________ we take action to protect the environment.

Can I have _____________ cakes, please— Sorry, I don’t have _____________ cakes.