問題詳情:
It's our duty our hometown clean and beautiful. We must do something for it.
A. keeping B. keeps C. to keep
【回答】
C
知識點:非謂語動詞
題型:選擇題
問題詳情:
It's our duty our hometown clean and beautiful. We must do something for it.
A. keeping B. keeps C. to keep
【回答】
C
知識點:非謂語動詞
題型:選擇題