单项选择题
Only ten to twenty percent of cold viruses are transmitted by carders, who, sneezing and coughing, ______ the viruses into the air.
A. spray
B. sprinkle
C. spread
D. sprout
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单项选择题
You should have your eyes tested every year in case the ______ of your spectacles need changing.
A. lenses
B. glasses
C. sights
D. crystals
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单项选择题
If you want to know the train schedule, please ______ at the booking office.
A. acquire
B. inquire
C. request
D. require
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