根据句意用所给的单词的适当形式填空。1.TheUKisanold

问题详情：

根据句意用所给的单词的适当形式填空。

1. The UK is an old ____ (Europe) country, where there are many palaces and castles.

2. Marie Curie and her husband won the Nobel Prize in 1903 for the __________(discover) of radium .

3. The population on the Earth is still increasing ____________(rapid).

4. Jimmy lives on the ________ (nine) floor of the new building.

5. ---Who’s that boy standing over there? 

----Sam, a foreign friend of ________.( I )

【回答】

1. European 2. discovery 3. rapidly 4. ninth 5. mine

知识点：构词法

题型：完成句子