On rainy days, accidents ______ happen sometimes on steep roads．

After hours of repair, the driver tried to start the machine but it _________ work.

Some aspects of a pilot’s job__________ be boring, and pilots often ________ work at inconvenient hours．

－What do you think we can do for our aged parents?
－You_______ do anything except to be with them and be yourself.

“Not having returned home yet, _________”, his father said to the police.

It’s said that there are plenty of hotels here .There       be any difficulty for you to find somewhere to stay.

On rainy days, accidents ______ happen sometimes on steep roads．

–Is there an express to Beijing tonight?
-- There ______be , but you’d better call the booking office to make sure.’

Whenever he worked until midnight, he        drink some coffee to get refreshed.

--- Hi, Lucy．Do you know where Linda is?
--- She           in the library．I saw her there just a few minutes ago．