根据句意，用所给单词的适当形式填空。
Tan Dun had no ______________ (music) instruments then . He made music with common objects .
The famous actor , Zhang Jiayi was successful in his ______________ (forty)
They succeeded in  ______________ (get) to the top of the mountain at last .
I don’t understand why he kept ______________(silence) in such an important meeting.
If you keep your worries to ______________(you), you will be real problem students.