（坐标系与参数方程选做题）在极坐标系中，点P(2，3π2)到直线l：3ρcosθ
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问题：
（坐标系与参数方程选做题）在极坐标系中，点P(2，
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题型：填空题
用方框中所给词的适当形式填空，使短文完整正确。
Yesterday my classmates and I went to visit an old people'shome with our parents. It was quite小题1:
from our school, so we went there by bus. After forty minutes, we 小题2: there.When the old people saw us, they felt very glad. We did a lot of things that day. First, we cleaned the house. It小题3: us the whole morning to do the work. And 小题4: we cooked and ate lunch with them happily. After that some students sang and danced for them, some students told funny stories to them, and 小题5: students chatted with them. The old people smiled all the time. Our小题6: worked hard, too. They made good examples to' us students. Doing things with our parents is 小题7: and exciting. We like it. We were all very 小题8: when we left. But we thought it was a special experience for us. And 小题9: of us felt that we were members of a big family. How happy we were! It is important for us all to help the people in need and show our 小题10: to everyone.