给两句英文挑错

1. Because we have heard from these good advice from doctors,to matain a healthy and strong body,people should eat as many kinds of food as possible to get all the nutrition we need.
mantain应该是maintain, 打字错误
修改如下：
Because we have heard such good advice from doctors, to stay healthy and strong, we should eat as many kinds of food as possible to get all the nutrition we need.
people和后面的we不一致，另外maintain后面的用法似乎太中式了，所以做了如上修改

2. we should develope a good living habit by taking frequent exercise and adequate nutrition.
此句中develope为错误，应该是develop
全句改为：
We should develop good living habits by taking frequent exercises and adequate nutrition.

in his early 30s中30s的s读z音

除了maintain的拼写错误，其他应该没问题。
读作thirties

貌似没什么错
thirtieth 在他三十岁的时候
我也不太确定

1,Because we have heard these good advice from doctors,to maintain a healthy and strong body,people should eat as many kinds of food as possible to get all the nutrition