Задание

Choose the correct options to complete the text

Have you ever [visited|visit|visiting|visit]the North Pole? It's the motherland for polar bears, arctic foxes, rare birds such as black-legged kittiwake, northern fulmar and snow bunting. Most people are scared of going hiking in freezing temperatures. Sam [have wanted|has wanted|wanted|wanting]to go on a north expedition since his birth. He's even created a Facebook page about global warming and severe climate changes. It's very important to tell teenagers about it. He [didn't finish|hadn't finish|hasn't finished|finishing] school yet but he has already achieved great things. In 2009, he [established|has established|have established|establish]a charity organisation to save polar bears. He was only fifteen years old when he [gathered|has gathered|have gathered|gathering]more than $50,000 to save bears. This year he is planning to go to the North Pole with tons of fish and special equipment.