Complete the sentences with the given words in their proper forms (用括号中所给单词的适当形式完成下列句子。每空格限填一词)
Our library is on the ________ floor of that building. (six)
Now the river is 200 metres ______. (long)
There we saw ________ of vegetables and fruit. (variety)
I’m _________ sorry. I’ll return your magazine this afternoon. (true)
My teacher told me the ________ of the idiom.(mean)
Please wait for me at the _________ to the People’s Square.(enter)
Dogs can save us when we are in __________. (dangerous)
The poor old man felt lonely because of his wife’s ___________. (die)