在某一时刻，测得一根高为1.8m的竹竿的影长为3m，同时测得一根旗杆的影长为25m，那么这根旗杆的高度为（　　）

    I had a good time last weekend. On Saturday morning, I ____hiking with my mother. We climbed the mountain and ____ many pictures. For lunch, we ____ fresh fish in a restaurant. On Sunday morning, I played ____ with my cousin Sam. In the afternoon, I went____ on the lake. It was fun!