아들녀석이 푸는 문제집 답을 매직으로 지우고 외웠는데
기억이 안 나요 ㅠㅠ
어법상 옳지 않은 것은?
1. He is leaving for china next friday.
2. The weather has been nasty for half a month.
3. I have.not walked a mile before it began to rain.
4. I will have read this book four times if I read it once again.