.All the students were listening carefully, with their eyes _____on the teacher.
catch the first bus, he got up very early this morning.
The number of people invited to the party _____ sixty, but a number of them ______absent.
He likes to help others ________ he is very busy.
Mr. Smith will ________ in the movement.
I can not spend ________ money on the car which is ________ expensive for me.