______ the chairman of the council, the vice chairman does duty for him.
--- Do you mind my opening the window? It’s a bit hot. ---- ________, as a matter of fact.
I knew we would be friends ____ I met you on campus.
Which do you enjoy ____ your spare time, surfing the Internet or building up your strength?
The financial crisis is attacking the USA, and it is true ___ many other countries.
---- Can you help me out? ---- Yes, I will solve the problem with this ____.way B. method C. mean D. means