---Harry Potter Ⅶ will be on this Saturday evening. Would you like to go to see it with me? --- No, thanks. I it.
Take a map with you while traveling ________ you have a guide or know the city well.
The little girl is very shy. She _______ speak in public.
My grandfather have an old house in _____ they have lived for 70 years.
---It _____ ten years since we _____ last time. ---Yes. How time flies!
---Why don't you go hiking today? ----I prefer ______ at home to ______out because the weather is too bad.