Task 4. Fill in the blanks with the Present Perfect, Past Simple, Present Perfect Continuous.
1. How long he (know) her?
2. I (be) at work yesterday.
3. Their parents (be) friends since their childhood.
4. They (buy) their flat last summer.
5. I already (do) housework.
6. The children (watch) cartoons for 2 hours.
1. How long has he known her?
2. I was at work yesterday.
3. Their parents have been friends since their childhood.
4. They bought their flat last summer.
5. I have already done housework.
6. The children have been watching cartoons for 2 hours.