- What are you doing here?
- I’m waiting for a tramway.
- And for how long have you been waiting for it?
- Yes, I have been here for 15 minutes and not even one came along. - Interesting, what Ann is doing right now.
- She’s looking through the post.
- And for how long has she been doing this?
- I think she has been working since 9 o’clock. She has already read all the telegrams and now she’s looking through the lettersa) He has begun studying English long ago
b) He’s studying English for a long time.К сожалению, не до конца видно