1. I'll call you if I have time.2. If this dress is too expensive I'll buy another one.3. It the bar is overcrowded we'll go to another one.4. What will you do if a taxi doesn't arrive?5. If he can't see me I'll come some other time.6. She will ask them if she sees them tomorrow.7. Will you call me if there are any problems?8. Mother will worry if you don't come in time.9. If winter is frosty they will skate.10. He will be angry if he sees you here.