It is reported that the United States uses energy as the whole of Europe.
| A．as twice | B．twice much | C．twice much as much | D．twice as much |
Many clothing manufacturers now substitute artificial silk _____ natural silk to cut down costs of production．
| A．with | B．by | C．for | D．of |
--- Where are you, Nancy?
--- Here in the sitting room, _______ to Professor Smith．
| A．is writing | B．write | C．to write | D．writing |
Canada is a country ______ many different nationalities as well as one with foreign immigrants ______ the majority of its population．
| A．consisting of; making up | B．making up of; occupied with |
| C．made up of; consisting of | D．consisted of; taking up |
--- Mum, I’ve at last passed the final exam．
--- ________
| A．Congratulations! | B．That’s all right． |
| C．Good luck． | D．Really good． |
What _______ great fun it is to play ______ game of basketball after a whole day of study!
| A．a; a | B．a; the | C．/; a | D．/; the |