31. The government strongly recommended that people with cardiovascular diseases _______ surgical masks when the air quality index rises.
(A) wear
(B) wears
(C) wore
(D) wearing

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統計: A(101), B(5), C(9), D(40), E(0) #1781929

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The government strongly recommended that people with cardiovascular diseases wear surgical masks when the airnquality index rises.n

政府強烈建議當空氣品質指標超標有心血管疾病的人戴外科用口罩 


 recommend 建議 cardiovascular (醫)心血管的 surgical 外科(手術)的
index 指標 指示 
5
0