помогите пожалуйста выбрать правильный вариант
Be careful with this paint. It ___ a certain amount of lead and mercury.
1. Is containing
2. contained
3. contains
4. has contained

What ___ with yourself? There’s mud all over you!
1. has you been doing
2. did you do
3. are you doing
4. have you been doing

___ you a ride home since he started working in this department?
1. has Sam been giving
2. has Sam given
3. hasn’t Sam given
4. does Sam give