Ответ:

1. Catherine has lived in this house since she was two years old.

2. Angela has been to Peru twice.

3. I took up karate eight months ago.

4. Roland bought his house in 2005.

Объяснение:

1. (Using "before" would suggest that Catherine no longer lives in the house.)

2. (Using "gone" would suggest that Angela is currently in Peru or on her way to Peru.)

3. Both options are grammatically correct, but the meaning is different depending on the context. "I took up karate eight months ago" suggests that the speaker currently practices karate. "I took up karate before" does not provide any indication of whether the speaker still practices karate or not.

4. (Using "since" would suggest that Roland has been continuously buying the house since 2005.)