根据汉语的提示，写出单词的正确形式。

Jim ________(画)many cartoons for his friends yesterday．

根据汉语的提示，写出单词的正确形式。

He saw the people in the town ________(下跪)down to beg rain．

根据汉语的提示，写出单词的正确形式。

Diogenes lives in ________(希腊)about two thousand years ago．

根据汉语的提示，写出单词的正确形式。

Tigers are ________(凶猛的)than elephants．

根据句意用括号中所给的单词的适当形式填空。

She is at ________ 50 years old．(little)

根据句意用括号中所给的单词的适当形式填空。

The abacus is one of the first ________ machine which is fast and accurate．(calculate)

根据句意用括号中所给的单词的适当形式填空。

Do you think the brain is a ________ computer?(live)

根据句意用括号中所给的单词的适当形式填空。

Edison ________ many things in his lifetime．All his ________ were very important．(invent)

根据句意用括号中所给的单词的适当形式填空。

China is a ________ country．(develop)

用括号中所给动词的正确形式填空。

The policemen ________ the thief a few minutes later．(catch)