读句子，根据所给汉语提示写出单词。

The old man gave away eight ________(百)books to the primary school in the countryside．

根据下列句子及所给汉语注释或通过上下文，写出空缺处各单词的正确形式。每空只写一词。

Have you ________(讨论)the problem with anyone?

根据下列句子及所给汉语注释或通过上下文，写出空缺处各单词的正确形式。每空只写一词。

He talked ________(兴奋地)to the reporters about his hopes of winning the race．

根据下列句子及所给汉语注释或通过上下文，写出空缺处各单词的正确形式。每空只写一词。

Do you lie ________(醒着的)at night, worrying about things?

根据下列句子及所给汉语注释或通过上下文，写出空缺处各单词的正确形式。每空只写一词。

UNICEF is one of the best-known ________(慈善机构)that help poor children around the world．

根据下列句子及所给汉语注释或通过上下文，写出空缺处各单词的正确形式。每空只写一词。

I had to throw away all the food after I left the fridge open．What a ________(浪费)!

根据下列句子及所给汉语注释或通过上下文，写出空缺处各单词的正确形式。每空只写一词。

John went out and ________(锁住)the door behind him．

根据下列句子及所给汉语注释或通过上下文，写出空缺处各单词的正确形式。每空只写一词。

The local clubs are making every ________(努力)to interest more young people．

根据中文提示写出单词或词组，使句意完整、正确。

The radio ________(发明)by Guglielmo Marconi in 1895．

根据中文提示写出单词或词组，使句意完整、正确。

There are ________(至少)5000 workers in that factory．