We have just heard a warning on the radio _____________ a typhoon may be on its way.
--- My son is _____ to be seen. Where has he gone? --- I think he _____ in the building.
His grandfather was among the first to settle in _____ is now a famous holiday center.
No sooner _____ to sleep than the telephone rang once more.
You should take _____ of this opportunity and try to make a good impression on them.
------Do you know if Linda is willing to take charge of the program? ------_________,does it?