---Would you mind ______ more slowly?
---I can't follow you.
---What ________ this piece of cloth used for?
---It is used for ________ the table clean.
---Do you like the book I lent you yesterday?
---Yes, I do. I like books about _______ sun.
-Whose comic book is this?
-It’s _________.
-Can you help me with my physics lesson this afternoon?
-I'm sorry, ________ I've something important to do.
-Do you want to give a talk on the subject?
-I prefer ________.