根据句意及所给汉语，写出空缺处单词的正确形式。

Li Lei was working in the ________ (化学) lab yesterday morning.

根据句意及所给汉语，写出空缺处单词的正确形式。

We were ________ (扫) the floor at noon yesterday.

根据句意及所给汉语，写出空缺处单词的正确形式。

Do you get on well with your ________ (邻居)?

根据句意及所给汉语，写出空缺处单词的正确形式。

I was waiting for the sound of the other ________ (长筒靴).

根据句意及所给汉语，写出空缺处单词的正确形式。

I think you'll be a good ________ (画家) in the future.

根据汉语写出单词，使句意完整。

As a boy, my brother was ________ (感兴趣) in science.

根据汉语写出单词，使句意完整。

Mark Twain was a famous ________ (美国的) writer.

根据汉语写出单词，使句意完整。

My uncle started his ________ (公司) five years ago.

根据汉语写出单词，使句意完整。

________(几百万) of people leave their fields for jobs in big cities.

根据汉语写出单词，使句意完整。

Bill Gates is a famous computer ________(科学家).