请在每组词中选出重音位置不同的单词
A. guitar
B. nineteen
C. today
D. yesterday
听录音，并选择重音正确的单词。Do you have a _______?
A. green 'house (=house painted green)
B. 'greenhouse (=glass house for growing plants)
听录音，并选择重音正确的单词。
A. head'doctor (= chief of the staff)
B. 'head-doctor (= psychiatrist)
听录音，并选择重音正确的单词。
A. paper 'boy (= a boy made of paper)
B. 'paperboy (= a boy delivering newspaper to people’s house)
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