Here's a story about Ming's life on the waters. Ming has lived all his life on a wide r____ in china. His home is a large house-boat with a roof, one of hundreds that move up and down. In about six years he has not once been on l____ but he is never lonely. He is a strong swimmer. In fact, he could swim before he could walk. When he wants to play with his f____ he just swims across to their boats or asks them to v____ him. Ming's father is a fisherman, but he never u____ a line or a net. Great black birds called cormorants do the fishing for him. Rings have been put around the birds' n____ so that they cannot eat the fish they catch. They have been taught to b____ the fish to people. And then people reward them with a fine big fish，as soon as their work is finished. Ming loves w____ the cormorants,but better still he likes going s____ with his mother. The shops,of course,are boats very like his o____.