B) how long you (now) your friend? с) i love tennis i ) tennis sinke i was 10. d) this crosswotd is difficult. i (do) it for 40 minutes. e) your english is good.how long you (learn) it?

B) How long have you known your friend * Здесь 'now' или 'know'?
c) I love tennis I've been playing thennis sinCe I was 10. 
d) This crossword is difficult. I've been doing it for 40 minutes.
e) Your English is good. How long have you been learning it?