A. when receiving real help. B. to their families. C. when they get off the bus. D. when they get the answer of a question from others.
A. address B. body C. closing D. signature
A. hurt someone. B. sneeze or cough. C. interrupt a talk. D. arouse someone's attention.
A. do something wrong. B. hurt someone. C. ask someone to say something again. D. show sympathy.
A. the reason for gratitude B. signature C. appreciation Dear someone