168. Whenever I met him, _____ was fairly frequent, _____ I liked his sweet and hopeful smile.
These tables and desks are all made of_____.
Jumping out of_____airplane at ten thousand feet is quite_____exciting experience.
The warmth of___sweater will of course be determined by the sort of___wool used.
Paper money was in___use in China when Marco Polo visited the country in___thirteenth century.
—— I’d like_____information about the management of your hotel, please. —— Well, you could have _____ word with the manager. He might be helpful.