Who is ________the fire in the kitchen?
| A．blame | B．to blame for | C．blamed | D．blame for |
Since the opening and reform policy, Chinaa boom in its economy.
| A．enjoys | B．has been enjoying | C．enjoyed | D．having enjoyed |
private cars are bringing us convenience, they may also cause traffic accidents and pollution.
| A．When | B．Since | C．while | D．As |
Nowadays, many people walk to work, Copenhagen（哥本哈根）Conference calling for living a low-carbon life to cope with global warming.
| A．in relation to | B．in terms of | C．in apposition to | D．in response to |
He has been working hard day and night, which, of course,his tiredness.
| A．accounts for | B．answers for | C．applies for | D．stands for |
Could I do some explanations? Ito call on you last night, but somebody came to see me just when I was to about leave.
| A．would intend | B．intended | C．had intended | D．was intending |