翻译几个英语句子？

1、 我设法7点到达那里，但还是迟到了。I managed to get there at 7, but I was late
2、 人们正在解决缺水的问题People are solved the problem of water shortage.
3 、如果前门没有人听到，你就试试敲后门。If nobody hears you at the front door, you try knocking at the back door
4 、为什么不试试用别的方法做这道数学题呢？Why not try other ways of doing this maths problem?

1 I had tried to arrive there at 7,yet failed at last.
2 The problem of water shortage is being solved.
3 If you are not heard at the front door, try the back one
4 Why don't you try other methods to figure out this mathematics problem?

1 I managed to get there at 7, but I was late
2 People are solved the problem of water shortage.
3 If nobody hears you at the front door, you try knocking at the back door
4 Why not try other ways of doing this maths problem?

1;I tried to get there at seven, but I was late.2People are to solve the problem of water shortage.3If nobody hears you at the front door try knocking at the back door

4Why not try using another method with this math problem