use water to put out the fire if oil catchesfire. As is known, oil ____ float on water.

By time they got to the airport, the plane .

Tony , why are you so happy—Oh, you know , there________ a basketball match tomorrow.

“Overall，export performancewill be better，andit’s going to accelerate in the Months.”said an economist in HongKong．

Little Tom admitted ______ in the examination, ______ the teacher his word that he wouldn’t do that again.