用括号内所给词的适当形式填空。 1. — The

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用括号内所给词的适当形式填空。

1. — The            (develop) of new products is important to our company. Do you know?
   — Yeah, it is our duty to try our best to deal with it.
2. I think the most helpful             (invent) is the light bulb (电灯泡). It gives people more time to work and
    play.
3. The foreigner spoke English so            (quick) that I could hardly understand what he said.
4. The large population of China has caused many            (difficult). For example, many farmers have no
   farmland to grow crops on.
5. — What do you think of the English            (train) school?
    — It is great. I have improved my English a lot.

1.development 2.invention 3.quickly 4.difficulties 5.training

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