Complete the sentences with the verbs in brackets in the present simple passive or the past simple passive.
1. These letters .......................... ( deliver ) yesterday.
2. This mobile phone is very popular. It ....................... ( buy ) by lots of people nowadays.
3. When .................. ( the castle / build ) ?
4. This computer program is very simple and it .......................... ( not use ) by professional programmers.
5. I ............................ ( not give ) any interesting presents for my last birthday.