Once there was a teacher who took all of his students for tea. What made the student surprised was that all the{#blank#}1{#/blank#}on the table were different. Each of them took a cup and stalled drinking their own tea, looking at the others' cups.

    The teacher said, "Do you notice your behavior(行为)? You are all looking at each other's tea cups and some of you even envy(羡慕)the{#blank#}2{#/blank#}cups of others. "Then he{#blank#}3{#/blank#}on." I put the different cups here on purpose(故意地)!Life is like this tea. You all have the same thing in your cups—tea. And yet you can't{#blank#}4{#/blank#}enjoy it with your envy of another's cup. You forget{#blank#}5{#/blank#}your own life when you envy someone else's life. So now, taste your own tea! Does it matter from which cup it comes?"

Dear David,

    How's it going? I'd like to tell you about my travel experiences.

    Last month, I went to Chengdu {#blank#}1{#/blank#} my vacation with my parents. Chengdu is in Sichuan, in the southwest of China. It's {#blank#}2{#/blank#} for its beautiful mountains, forests and lakes. Many people go there to enjoy their vacation every year. We had a five-day trip and took many {#blank#}3{#/blank#}. We saw pandas and monkeys. They were {#blank#}4{#/blank#}cute that we couldn't help watching them.

    We had an exciting trip! I felt tired but happy. Please e-mail me soon {#blank#}5{#/blank#} tell me about your vacation.