Ответ:

1. A: How long have you been at university? (you/be)

  B: I started two years ago. I'm in my third year now. (start)

  A: Do you live with your parents?

  B: I lived with them for the first two years but then I moved into a student hostel last September and I have lived there since then. (live,move,live)

2 A: Has your brother found a job yet? (your brother/find)

   B: Yes, he has just started work in a hotel. (just/start)

Объяснение:

Если в предложении есть указание на время выполнения действия в прошлом, то используем Past Simple.

Если же точного указания времени нет, а есть слова типа already ("уже"), just ( "только что") или выражение с since, то нужно использовать Present Perfect.

Ответ:

1. A How long you was at university? B I started two years ago. I’m in my third year now.

A Do you live with your parents? 
B I lived with them for the first two years but then I moved into a student hostel last September and I live there since then.

2. A your brother found a job yet? B Yes, he just started work in a hotel.

Объяснение: