Проверочная работа по Present Perfect Tense

Ex.1 Take the words from the brackets and consist the sentences.
1. My brother ____ computer games ___ 2 o'clock. (play) (since/for)
2. They ___ the violin ___ 2 hours. (play) (since/for)

Ex.2 Take the words from the brackets and consist the sentences.
1. Daniel has just finished his homework in Maths. But ___ .(yet/do English)
2. Ben has got a lof of homework. He ___ 4 o'clock. (since/do it)

Ex.3 Find and correct the mistakes. Write the sentences
1. We hasn't finished our test yet.
2. I've done this exercise since 5 minutes.
3. We have danced for 2 o'clock.
4. The flowers are wet. I haven't just watered them
5. The picture is ready. My sister has paint it.