問題詳情:
— Where are the runners?
— Over there. They ________ warming-up exercises.
A.is doing B.do C.are doing D.does
【回答】
C
知識點:動詞時態
題型:選擇題
問題詳情:
— Where are the runners?
— Over there. They ________ warming-up exercises.
A.is doing B.do C.are doing D.does
【回答】
C
知識點:動詞時態
題型:選擇題