— __________ have you been to Hong Kong on business?
— Once in a month.
A. How old B. How often
C. How soon D. How long
— May I know your age?
— Sorry, sir. It’s my __________ secret.
A. private B. painful
C. uneasy D. Valuable
— Do you know something about Christopher Columbus?
— He’s an Italian Navigator (航海家) who __________ America in 1492.
A. connected B. invented
C. supposed D. discovered
We plan to visit our mother college and teachers__________ give me good memory next year.
A. when B. why C. that D. where
— Would you like to volunteer in a mountain village school?
— I’d love to. I would like to __________ a different life.
A. achieve B. imagine
C. experience D. influence
In Switzerland, we never visit a friend’s house _________ calling first. It’s impolite.
A. except B. through
C. including D. without
