—Why does the lake smell terrible ? --because large quantities of water ____.
I’d be___, if you could give me an early reply.
-When are you leaving? -My plane _____ at six.
I need some red ink badly, but there’s _____ at hand.
You can go out _____ you promise to be back before 11 o’clock.
There are forty five students in our class, and they are _____ interested in football.