please help me to correct this sentence.

1)Before arrived, the teacher prepared the lesson. 2) The questions were answer by the teacher. 3) What is the answer is not clear. 4)John made his younger brother to wash the dishes. 5) We don't know the answer, we need to study more. 6)I like going to shop. 7)I need to know you understand or not. 8)Some of the informations were helpful. 9) While driving, the dog bit Larry. 10)Lucy has being helped by the doctor. 11)Joe was singing since 8:00 this morning. 12)Because the work is not easy. 13)I don't know where did he go. 14)Susie came to MCCC for study. 15)The young man was written a good paragraph. 16)First reason is the weather. 17)It is necessary studying grammar. 18)As soon as the teacher arrived in the classroom. 19) What is one consequence of plagiarism? 1)Before arrived, the teacher prepared the lesson. 2) The questions were answer by the teacher. 3) What is the answer is not clear. 4)John made his younger brother to wash the dishes. 5) We don't know the answer, we need to study more. 6)I like going to shop. 7)I need to know you understand or not. 8)Some of the informations were helpful. 9) While driving, the dog bit Larry. 10)Lucy has being helped by the doctor. 11)Joe was singing since 8:00 this morning. 12)Because the work is not easy. 13)I don't know where did he go. 14)Susie came to MCCC for study. 15)The young man was written a good paragraph. 16)First reason is the weather. 17)It is necessary studying grammar. 18)As soon as the teacher arrived in the classroom. 19) What is one consequence of plagiarism