If we try to think of the most important inventions in the 20th century, I think electricity may{#blank#}1{#/blank#}(is) the most important, in a way. It plays {#blank#}2{#/blank#}important part in the development(发展) of the modern world. It can affect(影响) everyone's life. When the electricity {#blank#}3{#/blank#}(go) off, we call it a power cut. Can you imagine what {#blank#}4{#/blank#}(we) life will be like{#blank#}5{#/blank#}(with) electricity?

    Almost everything will stop. Electrical appliances(电器) can't work, traffic lights are dead, many workers must stop{#blank#}6{#/blank#}(work)and so on. Electricity is so{#blank#}7{#/blank#}(importance), {#blank#}8{#/blank#}it is also limited.

    {#blank#}9{#/blank#}should we do? At least(至少)，we{#blank#}10{#/blank#}(must)waste electricity.

    There are many children without parents. I {#blank#}1{#/blank#} (meet) some of these children with my mother. We taught them to tell {#blank#}2{#/blank#} ( story ). This helped them express their {#blank#}3{#/blank#} (feel). One child said, "My friends don't {#blank#}4{#/blank#} (understand) my pain."

    We spent time with a girl {#blank#}5{#/blank#} (call) Vivien.  Her parents {#blank#}6{#/blank#}(die) in a car accident, and she is unhappy {#blank#}7{#/blank#} very lonely. She needs friendship. My mother and I will continue {#blank#}8{#/blank#} visit Vivien.

    I want to help disabled children. They have difficulty walking {#blank#}9{#/blank#}moving. I taught them to sing. Music can bring them joy and peace. I met a boy called Tim. He hurt his legs in an accident, but he has lots {#blank#}10{#/blank#}courage. We need to help children like Tim and raise their spirits.