________name is Bill, and ________ name is Jack.

Those ____ want to go please sign their names here.

I think students should bring mobile phones to school.— . This can cause some trouble.

I’m really depressed after so manyfailures. I can’t see any hope.—Cheer up! Behind everymisfortune_______!

Cancer has become the top killer ________ I think threatens the health of millions of people.