21. Mr. Brown: ________the men________ ? Mrs. Brown: I am not sure. (確定)(A) Is, swimming in the pond
問題詳情
21. Mr. Brown: ________the men________ ? Mrs. Brown: I am not sure. (確定) (A) Is, swimming in the pond. (B) Are, drawwing pictures in the classroom (C) Is, building a new house for the old dog (D) Are, standing in line over there