—Daddy, how much do you earn an hour? —If you ______ know, $20 an hour. A. may B- must C.can D.should
On the bus, all the people except the driver ______ to talk and laugh during the journey.
It is believed that if an event is _______, it will surely ______ the readers of the paper.
If we are not _______ the progress we have made, we will have greater success.
_______ the class teacher’s repeated warnings, the boy was late for school again.
He_______ himself as a police officer.