| 1 | If it rains tomorrow, I won't go on the trip. | |
| 2 | If you try to escape, the police will never let you go. | |
| 3 | Please let me know in advance if you are going to attend the meeting. | |
| 4 | If you fail the exam, you need to study harder. | |
| 5 | We can go home earlier tonight if there is no traffic congestion. |
