根据句意和汉语注释,写出单词的正确形式。
The _________ (沉寂) was finally broken by the father and he started to talk.
Miss Brown is one of the __________________ (严格的) teachers I have ever met.
Finally, my close friend ____________ (成功) in helping me solve the maths problem.
The ________ (决定) you have made doesn’t seem so good. You need to be more thoughtful to improve their study.