2 задание:
1. They have already informed me about the accident. (b)
2. He is the most handsome man I have ever known. (a)
3 задание:
1. Don't worry about your letter. I sent it the day before. (c)
2. I have lost my glasses. I had them when I came to college this morning. (b)
4 задание (в present perfect):
1a. We have never been to this city. - мы никогда не были в этом городе
2а Have you ever seen this film? - ты когда-нибудь видел этот фильм?
1 и 5 не видно