1. He/have/a cold/a week.
=> He has had a cold for a week

2. They/buy/the new house/April.
=> They have bought the new house since Apirl

3. My family/be/here/Christmas.
=> My family has been here since Christmas

4. We/not see/each other/10 years.
=> We haven't seen each other for 10 years

5. Mr.Clark/work/in the bank/a long time.
=> Mr Clark has worked in the bank for a long time

6. Tom and Joanna/go/toFrance/last summer.
=> Tom and Joanna have gone to France since last summer

7. My sister/start/a new job/yesterday.
=> My sister has started a new job since yesterday.

8. I/not eat/in that restaurant/ages.
=> I haven't eaten in that restaurant for ages

9. Mr.Robinson/teach/in this school/1987.
=> Mr.Robinson has taught in this school since 1987.

10. I/write/this letter/six o'clock.
=> I have written this letter since six o'clock