Theydon’tknowwhat
問題詳情:
They don’t know what ___________ the problem .
A. to do B. do C. to do with D. do with
【回答】
C
知識點:非謂語動詞
題型:選擇題
問題詳情:
They don’t know what ___________ the problem .
A. to do B. do C. to do with D. do with
【回答】
C
知識點:非謂語動詞
題型:選擇題