It was not until midnight theyreached the camp site.

Sorry, Professor Smith. I didn’t finish the assignment yesterday.—Oh, you _____have done it as yesterday was the deadline. [ ]

Mum, must I stay there the whole day—No, you _______. You may come back after lunch, if you like.

Most of us value our time, but some of us treat it ________ it had no value at all.

ys, many people walk to work ________Copenhagen Conference calling for living a low-carbon lifestyle to deal withglobal warming.