Помогите пожалуйста решить

I
1.not to go
2.to buy
3.not to be
4.to hurt
5.to be
6.to go
7.to drive
8.to lend
9.to clean

II
1.Have gained weight
2.to smoke a lot.
3.appeared to broke down.
4.to look like doctor.
5.claimed he had seen the robber.
6.tend to forget things.
7.refused to write the article.
8.afford to buy a car.
9.decided not to fly to London.

III
1.what to do
2.how to ride
3.whether to go
4.how to spend
5.how to use...