When a friend gave Tom a ticket he ________to the game．

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

re people in Shanghai have been ________ to beinfected with the deadly H7N9 bird flu, local authorities said on Sunday

The number of students in our school_________ morethan 2000.

dn’t you tell me about your trouble last week If you ________ me, I could have helped.