AIDSissaid
問題詳情:
aidS is said ______ the biggest health challenge to human over the past few years .
A. that it is B. to be C. that it has been D. to have been
【回答】
D
知識點:非謂語動詞
題型:選擇題
問題詳情:
aidS is said ______ the biggest health challenge to human over the past few years .
A. that it is B. to be C. that it has been D. to have been
【回答】
D
知識點:非謂語動詞
題型:選擇題