Answer:
1. I cannot remember well, but I am sure I <em>have been</em> here for more than ten years.
The past participle of be is been.
2. Sitara was only three months old when her parents <em>relocated</em> to New York.
The past participle of relocate is relocated.
3. By the time they decided to return to India, she <em>became</em> old enough to make her own decisions.
The past tense of become is became.
Answer:
Jane: Visiting Buckingham Palace has been my dream for so long, thank you so much for coming on this trip with me!
Madison: Of course! I always wanted to see the changing of the guards! And I´ve become so interested in the monarchy since watching The Crown!
J: I´ve been thinking we could rent a car. What do you think? Would public transportation be better than driving ourselves?
K: I guess public transportation should be best because we don´t know our way around London and neither of us has an international driver's license.
A: That´s true. And It probably would be too costly. Besides, we can get a fancy English breakfast before and a few beers after without worrying about drinking and driving.
M: Do you think we may have a chance to see the Queen?
A: I sure hope so!
Explanation:
Buckingham Palace is open for tourist visits. The forecourt of the Royal Palace is where the Changing of the Guard takes place, inviting travelers to observe it.