In old days, books for blind people used paper ____ against metal wire to form letters.
If a shop has chairs _______ women can park their men, women will spend more time in the shop.
I bought a dress for only 20 dollars in a sale; it was really a good ______.
We can never expect________bluer sky unless we create________less polluted world.
The couple look very excited,because their only son has been _______to Hong Kong University.
We’ll take a honeymoon trip to Venice. Would you like to _____ my dog for me while we are away?