Ответ:
Go - идти, game - игра, city - город, wear - носить, cool - здорово
1.needn't
2.mustn't
3.needn't
4.mustn't
5.needn't
6.mustn't
7.mustn't
По логике, вроде как получается, что 1.b), а 2.c)
16. Mary went down with the flu yesterday and she stayed at home.
17. Boys have gone after the kitten and caught it.
18. Don’t use this cheese! It’s gone off.
19. Dad is so sad. He is going through a difficult time.
20. The price of oil has gone up (down) recently.
The camp located at the foot of the Ural Mountains. With me stayed my great friends and instructor with other random people. We're sleeping without a second thought. And then we start trying to climb to the mountain, so then we're climbing and climbing. After three thousand meters and three pints of sweat, all our remaining group decided to relax, because we saw that equipment has become more, but people less. I write this blog on top of the mountain with such a wonderful view, but i have to finish, because we're lost equipment and bears stole all our food. Also, it's very cold here.