- Will you be available at three o'clock tomorrow afternoon? - No. I ______ a lecture then.

With a travelling speed of up to 350 kilometres per hour, the railway to be built between Beijing and Shanghai _______ the journey time from 12 hours to 5 hours．

— I called you at ten, but there was no reply. —Oh, that was probably when I ________ a shower. 

Three months ____ before we knew it.

Police are searching for an escaped criminal who is reported to _____ since he broke away from the prison．