题目内容：

单词的适当形式填空

1.There _______ (be) a great change in the country in three years.

2. He is so ___________ (care) that he makes many mistakes.

3.It is interesting ____________(fly) the kite.

4.A book of ________(I) is missing, I can’t find it.

5.Lingling is so happy because she is a __________(luck) dog today.