Trees
來源:國語幫 3.33W
問題詳情:
Trees ____ fight air pollution.They are natural air conditioners.
A.should B.must C.need D.can
【回答】
D
知識點:情態動詞
題型:選擇題
問題詳情:
Trees ____ fight air pollution.They are natural air conditioners.
A.should B.must C.need D.can
【回答】
D
知識點:情態動詞
題型:選擇題