I’d like another cup of coffee.Add more sugar ___ it, OK?

If we_________ sunlight_________ a dry leaf with a piece of glass, it may start burning.

I was about to walk over to Tom’ s seat when he ________ and left.

The time and effort he has devoted during the past few years _____ trees in that village are now considered to be very important.

—Amy, would you __ me to the airport to pick up Jim? I don’t won’t to go there alone.—No problem.