1. She (not catch) the train if she (not leave) now.
2. Nobody (understand) you in England if you (not speak) English.
3. If your sister (ask) me for help, I (help) her, of course.
4. Susan (be) rich if she (marry) Harry.
5. Tomorrow we (go) to the swimming-pool if it (be) so hot.
6. If Paul (continue) training like that, he (become) a good football player.
7. I (buy) a lot of clothes if I (go) shopping, so I'd better stay in.