完形填空: Dear son, I want to thank you for teaching me a very 1 lesson in life by t

完形填空：

Dear son,

I want to thank you for teaching me a very 1 lesson in life by the great example you 2．When we were eating at that café in Bondi and a person who had 3 his hamburger didn't have enough money to pay for it, without any 4, you went over and put the extra ＄2 into his 5．

When we were leaving, you 6 threw a five-cent coin onto the pavement and said 7 like, “Some kid will really enjoy 8 this．”

Last week, a young man 9 me in the line at a petrol station didn't have 10 money to pay for his petrol．I asked the money collector, “How much 11 is he?” she told me he had meant to put ＄15 of petrol in his car 12 he had been looking at the wrong gauge(计量表)and had put in 15 13, which came to just over 14．That is an easy mistake 15 both gauges run fast．

Something made me think of you and 16 you did that night at the café in Bondi．I handed the man ＄6．He was so 17 and said, “But why would you do this for me?” I just smiled as I thought of you．

Thank you, son, for teaching me that “it's 18 to give than receive”．Now when I see a five-cent coin on the 19 and want to pick it up, I think of you and leave it 20, just in case some kid will get a kick out of finding it．

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