— Could you teach me how _________ cakes? — Sorry, I don’t know.
I never doubt _____ this exhibition is worth ________.
— I’m new here. ---Take a map with you. You’ll find it of great _____ in helping you to find the way.
Could you tell me _____________ ?
I hear that we will have _________ teaching building __________ .
—What did you do yesterday? —My brother took two friends of ______ to play chess with us. But I don’t’ know ___ of them.