Ⅰ.用所给单词的适当形式填空（每小题1分，共8分）
1．Friendship is a(n)________(universe) key to be able to open everyone's heart.
2．I hope you will enjoy the book and find ideas in it to________(simple) your life.
3．There is a difference between wisdom and________(intelligent)．A person may have one without the other.
4．His dream of opening a restaurant became a(n)________(real) in 1994.
