He is the first person you can think of to rely on, for he is always willing to ________ whoever is in trouble.
She asked the doctor to speak to her parents on her___.
I feel it is your husband who____for the spoiled child.
The flood started and we had to_____higher ground.
Some experts have made an ______ parents to supervise their children.
The conference has been to discuss the effects of tourism___the wildlife in the area.