13.To paint a picture later, _____.
(A) a rough sketch of the scene is useful
(B) he made a rough sketch of the scene
(C) a rough sketch of the scene makes
(D) the scene requires a rough sketch
(B)13.To paint a picture later,_________. (A) a rough sketch of the scene is useful 場景的草圖很有用 (B) he made a rough sketch of the scene 他對場景做了草圖 (C) a rough sketch of the scene makes 場景的粗略草圖 (D) the scene requires a rough sketch場景需要粗略草圖