Please excuse me _______ your letter by mistake.
__________ be sent to work there?
Our class __________forty-five students, in other words, forty-five students __________our class.
Mum was against my suggestion of spending the vacation in the mountains while Dad was __________ it.
The audience __________ before TV sets are listening to Yi Zhongtian's stories with their eyes __________ upon him.
The boy insisted that he __________ the glass. He said that he was not there then.