All of the sentences should be in Type 2 .
1. I (travel) around the world if i (have) a lot of money.
2. If you (listen) to the teacher carefully , you (get) better marks.
3. If he (work) harder , he (be) richer.
4. If i (be) the richest man in the world , i (help) the poor.
5. I (write) to him if i (know) his address.
6. You (understand) it if you (read) it carefully.
7. They (give) you the job if you (wear) a suit.
8. I (do) it if I (know) how to.
9. If he boxer (be) more courageous , he (win) the match .
10. It (be) wonderful if your brother (be) here.

i would travel around the world if i had more moneyif you listened  to the teacher carefully , you would get better marksif he worked harder, he would be richerif i were the richest man in the world , i would help the poori would write him if i knew his addressyou would understand it if you read it carefullythey would give you the job if you wore a suiti would do it if i knew how toif the boxer was more courageous , he would win the matchit would be wonderful if your brother was here