Поставьте следующие предложения в Present Perfect Tense, употребив обстоятельства...

3 they have just gone home .
4 I have just seen him.
5 He has never been to London.
6 They have never given me the book.
7 I have never seen this film.
8 She has never been to Siberia.
9 I haven't met you in Moscow since 1976.
10 They haven't spoken English since last year.
11 I haven't seen her there since September.
12 She hasn't read this book since her childhood.
13 Your friends have written a letter to you this week.
14 He has left for Moscow this month.
15 I have learnt grammar rules today.
16 They have finished their work this year.