Joseph was very lucky （） with his life; he almost did not get out of the room.

单项选择题The project requires more labor than （） because it is extremely difficult.

A．has been put in
B．have been put in
C．being put in
D．to be put in

单项选择题Had Paul received six more votes in the last election, he （） our chairman now.

A．must have been
B．would have been
C．were
D．would be