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see 答案: A 試題難度: 三顆星 知識(shí)點(diǎn): 一般過(guò)去時(shí) 9.—Is Xiaoqiang doing his homework? —_____. ,he doesn’t , he is , he does ,he isn’t 第 3 頁(yè) 共 3 頁(yè) 答案: B 試題難度: 三顆星 知識(shí)點(diǎn): 一般過(guò)去時(shí) 10.—What _____ your family doing besidethe lake? —They’re planting trees.