英語(yǔ)從句有哪幾種?請(qǐng)舉例說(shuō)明.下面有幾個(gè)句子,請(qǐng)說(shuō)出是哪種從句.
Fewer people will do such jobs in the future ({ because they are borin }).
However,some scientist bilieve ({ that althaugh we can make robots }).
For example,scientist James White thinks ({ that robots will never be able to wake up and know where   they are }).
They think ({that robots will even be able to talk like humens in 25 to 50 years.})
However,they agree ({it may take hundredsof years.})
In India,for example,scientists made robots ({that look like snakes.})
If ({buildings fall down with people inside}),these snake robots can help look for people under the buildings.
We never know ({what will happen  in the future.})

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