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)
Mr. White lives on the________ floor in that building. (five)
Walking in the space is one of the _____ of our time. (wonder)
Tom will study still __________ next term. (hard)
He is very careless, so he is __________ to be in charge of the experiment. (fit)
The plane landed ________ at last after flying in the storm for about one hour. (safe)
Have you ever seen how to _______ a cow? (milk)
Not everyone enjoys fast food. Jack is the one who ________ hamburgers. (like)
At the end of every year, some people go back to their ________ homes.(national)