【解析】：本题考查的是看图说话，主要围绕周末活动的话题展开。需要根据图片中的提示和对话内容，描述出图中人物在周末通常做什么。图中给出了三个场景：野餐、放风筝和看望祖父母，以及对话中的提示“What do you usually do at weekends?”和“I ... What about you?”。
【答案】：
-I usually have a picnic with my friends at weekends. Sometimes, I fly a kite in the park. What about you?
-I often visit my grandparents.
