题目内容：

根据句意，用所给单词的适当形式填空。

1.Next Tuesday is my sister’s ____________(twelve) birthday.

2. In general, Chopin is a ____________(piano) of great ability.

3.Don’t forget ____________(turn) off the gas after cooking.

4.Of all the teachers in the school, Mrs. Smith is the____________(patient) with students.

5.Finally the firemen saved the little girl under the damaged building ____________(success).