用所给单词的适当形式填空

① The doctor has saved three ____(life) today.

② Mike's____(foot) are big , but his ____(tooth) are small. 

③____(thousand)of visitors visit Mount Huang every day. 

④The Greens____(have) been to Hong Kong twice.

⑤____(orange) is my favourite fruit.

⑥The____(leaf) turn yellow in the autumn.

⑦There're two____(Japanese) and three ____(German) on the bus.

⑧The guide has collected all the ____(visit) ID cards.

⑨There’re aboutnine ____(hundred) students in the school. 

⑩____(million) of people has no houses to live in after the earthquake.

如图所示，小明借利用滑轮组把货物提高h之际，体验测量滑轮组机械效率的实验，以下说法错误的是（S是人拉绳时绳子移动的距离）（　　）

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根据材料内容，选择正确答案。

    Mr Smith had a week's holiday, so he said, "I'm going to see the sea by train." He put on his best clothes, took a small bag, went to the railway station and got onto the train. He wore a beautiful hat, and he often put his head out of the window during the trip and looked at the beautiful scenery. But suddenly the wind pulled his hat off.

    Mr Smith took his old bag and threw it out of the window quickly too. The others in the train laughed. "Is your bag going to bring back your beautiful hat?" they asked.

    "N0," Mr Smith answered, "but there is no name or address in my hat, and there's a name and an address on the bag. If someone finds both of them, he or she will send me the bag and the hat.''