高中英语将来完成时的被动语态单选题

By the time he gets home, his father _____________ for Pairs on business.

A．has left	B．will have left
C．had left	D．will leave

If we don't hurry up, everything ________ by the time we get to the party.

A．will be eaten	B．is eaten
C．has been eaten	D．will have been eaten

Beyond the lake _____ quantities of birds coming from the North every winter.

A．flies

B．flying

C．flied

D．fly