The possibility of a way out of the impasse(僵局) had never ____________ to anyone.

We’d better discuss everything________before we work out the plan

and gentlemen, due to an unexpected accident, one of the singers who all of you to hear____tonight,

.The bridge being built there _______ by the time you come back

Should I talk to you in English or French? — Do as you ________ . We understand both.