Our teacher is always busy preparing lessons until 11 o’clock at night, _______we students have gone to sleep.
With the final examination ______, we are busy going over what we’ve learnt this term.
–Would you mind if I ______ here? –______. It’s not allowed.
______ of the water in this cup ______ splashed onto the floor.
The driver wanted to park his car near the roadside but was asked by the police ______.
–You’ve left the window open. –______. I’ll go and close it.