At that time, he spent as much time as he can_____the ancient statues which would be sunk in the river.
—Jessica is very bright and studies very hard _____. —No wonder she always gets the first place in the examination.
The two top students in Mr. Green’s class competed _____ each other for the highest marks.
It is no use ____ with that mean storekeeper, for he won’t cut down the price.
There is no doubt ____ John will come by bus.
The reason ____he was late was ____he had taken a wrong bus.