1) I'm oppose to play with my younger sister's because i have to study intil the test finish.
>> I'm opposed to play with my younger sister because I have to study until the test is over.
2) I lend ahand to grandfather, I felt happy.
>> When I lend a hand to my grandfather, I felt happy.
3)Almost korea people have to care of thier body, because they don't know who acquire meris vairs.
>> Most people in Korea have to take care of their bodies because they don't know who acquires MERS virus.
4)The presidentis in the public eye because she control our contry.
>> The President is in the public's eye because she controls our country.
5)The police hand in a thief. - CORRECT