어법상옳은것은?(틀린것은 왜틀렸는지 모르겠어요ㅠㅠ)
①if i studied hard, i could pass the exam.
②if he went there, he will do the work.
③if you did the work, you will fail.
④if i have a lot of money, i would buy the car.
⑤if she were not home, i will go there.

다음빈칸에 알맞은 것은?(해석도 부탁드립니다.)
if a situation or activity ( s) something, that thing is a necessary part or consequence of it.
①bind ②involve ③pollute ④reverse ⑤graze