______
A. They delivered a postbox with some messages to classmates.
B. They put their written messages in a mailbox on that day.
C. They wrote letters to teachers on that day.
D. They sent messages to their teachers on that day.
______
A. Notes and books.
B. Postcards and books.
C. Flowers and books.
D. Chocolate and candy.
浏览器不支持音频_______
Americans spend less money on pets because of the current economic recession.
B. Americans spend less money on pets in spite of the economic prosperity.
C. Americans spend a lot of money on pets because of the economic prosperity.
D. Americans spend a lot of money and time on pets in spite of the economic recession.
_______
A. They want to keep their pets healthy.
B. Medical services for pets are good in America.
C. Their pets usually fall sick.
D. They have some extra money.
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