--The window is dirty.
----I know. It ______ for weeks.
| A．hasn’t cleaned | B．didn’t clean |
| C．wasn’t cleaned | D．hasn’t been cleaned |
Though ____ the dangers of smoking to their health, smokers still find it hard to give up smoking.
| A．aware | B．aware of | C．are aware of | D．be aware of |
---Do you work in this office?
---No, as a clerk in this office is on vacation, I’m just ____ here for about a week.
| A．hanging out | B．working out |
| C．turning out | D．helping out |
They _______ drinking although they are drivers, which is very dangerous both to them and the passengers.
| A．give up | B．devote themselves to |
| C．quit | D．abandon themselves to |
She had a computer at home, and her parents desired that she _____all her work at home.
| A．do | B．does | C．must do | D．would do |
In our city, almost everyone is _______bringing down the housing price because it is too high for them to buy one.
| A．in honor of | B．in search of |
| C．in need of | D．in favor of |