1. if you leave your roller skates on the path someone definitely (slip) over them. 2. i (buy) shares in that company if i had some money. 3. you can’t see tom now: he (have) a bath. 4. these workmen (be) never satisfied; they are always complaining. 5. if i (know) his address i’d give it to you. 6. the director didn’t allow the actors to travel by air while they (work) on the film. 7. her phone (ring) for ten minutes. i wonder why she doesn’t answer it. 8. in a hundred years’ time people (go) to mars for their holiday. 9. she had a headache; otherwise she (come) with us. 10. when you (do) 4,000 kilometres you can drive it at 70 k.p.h.

1. If you leave your roller skates on the path someone definitely will slip over them.2. I would buy) shares in that company if I had some money. 3. You can’t see Tom now: he is having a bath. 4. These workmen has never been never satisfied; they are always complaining. 5. If I knew) his address I’d give it to you. 6. The director didn’t allow the actors to travel by air while they were working on the film. 7. Her phone has been ringing for ten minutes. I wonder why she doesn’t answer it. 8. In a hundred years’ time people will go to Mars for their holiday. 9. She had a headache; otherwise she came) with us. 10. When you do 4,000 kilometres you can drive it at 70 k.p.h.