Plz help mr to find out the mistakes.

1. want ---) wanted
2. every one ---) everyone
3. am(1) ---> were am(2) ---) would be
4. I want to go to England, because I have many family members living there.
5. could ---) can

希望幫到你啦!!!

2.I want to maintain Hong Kong's safety.
3.If i am a singer, i will be rich.
4.I want to go to England because my relatives live there.
5.I can be a policeman because i can run fast

for sentence 1 i think it is ok
for sentense 2, you write it in chinglish, which means you use translate your chinese meaning to english
for 3, this is not surely possible, so you should use conditional 1
for 4, i dont know what you would like to say, so i change it for you
for 5, you cant use could , if you use could, that means you can run fast in the past, but you cant do that now or in the future

i hope i could help you