1. The Brown family has gone to Switzerland every winter for 4 years.

2. My brother has eaten frogs' legs for 3 times

3. Carol has been in Morocco since last month

4. timothy has ridden a bus to school since his car broke down

5. Jorge and Carmen has married since 1980

6. Scientists have concerned with the world' s rain forests for many years

7. James has known how to repair a computer for a long time

8. I have wanted to go to Japan for several years

9. Marry has been excited about space exploration since she was young  

10. I have had a bike for 2 months