Replace the following groups of sentences by a sentence with a for-phrase subject

Model: He won't catch the six fifteen.

It's impossible. It is impossible for him to catch the six fifteen.

1. She explained everything. It was not difficult. 2. She managed to do it in time. But it was quite an effort. 3. Don't make mistakes. It's important. 4. Her mother made the decision. It's the usual thing in this family. 5. We ought to take a vacation now. It won't be difficult. 6. You'll speak English with her. It'll do you good. 7. She is very late. It's rather unusual. 8. You really ought to see a doctor. It will be best. 9. We'll spend a couple of weeks in Petersburg next June. It will be rather pleasant.

It was not difficult for her to explain everything.It was quite an fffort her to manage to go it on time.It us important not to make mistakes.it is usual thing in this family her mother to make a dicision.It won't be difficult to take a vacation now.I'll do you goo to speak English with her.It is rather unusual for her to be very late.It will be best to see a doctor It will be rather pleasant to spend some weeks in Petersburg next June.