問題詳情

(  )9.There ________ three main groups of people in Singapore. Do you know what they are?
(A) have 
(B) has 
(C) is 
(D) are

參考答案

答案:D
難度:簡單0.803571
統計:A(5),B(4),C(1),D(45),E(0)

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