72. You need more physical exercise to build up your ___________(strong).

71. After a comfortable bath, I felt ____________(relax).

70. Will you go to the ___________(音乐会) with John tomorrow?

69. I have no ___________(选择) but to finish my homework carefully.

68. We have lent him thousands of dollars, but he seems never ______________(满足).

67. ____________(牙医) are those who look after your teeth.

根据句子意思，用括号中所给汉语提示或英语单词的适当形式填空。(每空一词)

66. This toy is not ____________(适合的) for young children.