根据句意和汉语注释，写出单词的正确形式。
The club has invited two foreign _________________(教练) to train their football.
Tibet, a famous area in the _________________(西南方) of China, attracts(吸引) thousands of visitors from all over the world every year.
The new house is so beautiful, but I’m afraid I can’t ______________(买得起) it.
It is not ______________(恰当的) for you to talk with your mouth full.