Chia từ ở dạng thích hợp: If you (drive) … more carefully, you wouldn’t have so many accidents

1.If you (drive) ………………………….more carefully, you wouldn’t have so many accidents.
2.What (happen) ………………………………..if there (not be) gravity?                                                                      3.If I (make) ………………………..that mistake again, my teacher (get) ……………… angry with me