--When did you become a volunteer for the elderly?-- Two years ago. I ______ this group since then.
— __________ have you been to Hong Kong on business?— Once in a month.
— May I know your age?— Sorry, sir. It’s my __________ secret.
— Do you know something about Christopher Columbus?— He’s an Italian Navigator (航海家) who __________ America in 1492.
We plan to visit our mother college and teachers__________ give me good memory next year.
— Would you like to volunteer in a mountain village school?— I’d love to. I would like to __________ a different life.