单项选择题
| It was cloudy. A small boy and his father (41) a walk in the country. It suddenly began to rain hard. They didn’t have their umbrellas (42) them and there was nowhere to hide from (43) rain, (44) they were soon (45) . As they walking (46) through the rain, the boy (47) his father and asked him, "Why does it rain, Father It isn’t very nice, isn’t it " (48) very nice, but it’s useful, Tom," (49) his father. "It rains to make the fruit and the vegetable grow for us," Tom thought about this for a moment, and then he said, "Then, why does it rain on the road (50) , Father" |