Put thew verbs in brackets in the correct tence: 1. how long you (learn) english? 2. how long you (know) your friend? 3. i love tennis. i (play) tennis since i was 10. 4. this crossword ic difficult. i (do) it for 40 minutes. 5. your english is good. how long you (learn) it.

1. How long _have you _been learning English?
2. How long _have__ you known your friend?
3. I love tennis. I _have been playing tennis since I was 10.
4. This crossword is difficult. I have been doing  it for 40 minutes.
5. Your English is good. How long __have_ you been learning it?