He often tells the children _______ when they play water sports A. be careful B. not be careless C. to be careful D. to be careful withĐoạn văn219/320He often tells the children _______ when they play water sportsbe careful not be careless to be carefulto be careful withGiải thíchĐáp án C Câu tường thuật dạng câu mệnh lệnh