Drive on the right side of the road and overtake on the left.
The minimum age to drive a car is 17.
Seat belts must be worn in the back seats if belts are fitted.
Children under 10 years old must always sit in the back of the car.
The answer is I have eaten
SO the adverb is fairly and I would say that the adjective modified is child
C. Ellos cruzan la Calle (They cross the street)
For this case what we should do is to choose each of the expressions used in Spanish to reject an invitation.
We have then:
1) Me encantaría pero...
It is a phrase that usually comes with a reason that says why you will not accept the invitation
2) En otra ocasión tal vez...
In this sentence you are already saying that you can not attend the invitation.
3) Qué lástima pero...
It is a phrase that shows repentance, followed by an explanation of why you will not accept the invitation.
4) Cuanto lo lamento pero...
It is an expression that demonstrates the same meaning of expression number 3.