【正文】
ground. Is he ... on the playground? Yes? No? Yes, he is playing pingpong with Michael on the playground. ? Write down the Ving forms of the verbs. ① play ② watch ③ make ④ swim ⑤ sing ⑥ have ⑦ do ⑧ sleep ⑨ e ⑩ put playing watching making swimming singing having doing sleeping ing putting Present Continuous ________ you doing your homework? Yes, I am. / No, I39。t. ________ Wang Wei and Lin Tao dancing, too? No, ____________. Are Is Are they aren39。s They