1. He and I-------well.
Ans: been.
2. Two and two------- four.
Ans: makes.
3. None of the students------- a car.
Ans: has.
4. Charity (to begin)------- at home.
Ans: begins.
5. The mob------- dispersed.
Ans: has
6. Everybody (go) there.
Ans: has gone.