-What are you busy doing, Sandy?- I’m making some flash cards _________ me remember English words.
I don’t know _________, but I guess he may be a doctor.
— I wonder ________ you water this kind of flower. ---Every other day.
Try on this red skirt; you will look great ________it.
—Will someone go and get Dr White? —He’s already been _________.
My parents have promised to come to see me before Ifor Africa.