b Answer the questions in a. Use the present perfect + for or since. I've been married for 20 years. 11 I was a child. 2 She three years. 31 a long time. 4 He 1990. 51 May. 6 It…

Sure! Here are the completed sentences using the present perfect tense with "for" or "since":

1. I’ve been married for 20 years.
2. She has lived in that house for three years.
3. I have known him for a long time.
4. He has worked at the company since 1990.
5. She has played the piano since May.
6. It has snowed since 1973.
7. We have been friends for about two years.
8. He has traveled to Europe since 2008.

If you need any more help, feel free to ask!