The man will have to wait all day ______ the doctor works faster.
A good education system should include the practical________of the theories students have been taught in the classroom.
—Will you see me off at the airport at ten tomorrow morning? —Sorry, I ________ a lecture then.
-Did you have a good sleep last night? -Yes, never sleep ____.
It is the third time so far that such a festival________in my hometown.
—May I go and play with Dick this afternoon,Mum? —No,you can’t go out________your work is being done.