5. Not content with simply being breathe into the atmosphere, the ______ makes us sneeze or cough explosively.
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4. The pills help relieve cold ______ .
3. Doctors say that the disease is most ______ in the first twenty-four hours.
2. Over 500 people died during last year’s flu ______ .
浏览器不支持音频Directions: You will hear 8 short conversations. ()Coversation 1
A. It’s cheaper.
B. It’s safer.
C. It’s more comfortable.
D. It’s more interesting.
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