The silence of the library was sometimes broken by an occasional cough or by the sound of pages _______.
Large quantities of polluted water_____ into the sea so that lots of fish died.
---How do you find the movie you saw last night? ---_______. I just saw half of it
At first driving requires a lot of concentration, but over time, it just becomes_____.
The dangerous building could fall down any time, but that’s a risk we’ll have to_____.
I need to buy a new MP4 and cellphone badly but I can’t afford_____.