28.You___________use your cell phone here in our hospital because of the disturbance to the electronic equipments! It’s forbidden.
He was _________down for several days after he heard the bad news .
_______news came ________an unknown disease was spreading in the area .
They have no idea at all ________.
.It is well known that the Internet will let people have __________ to huge amounts of information from their own homes.
. Being out of order, ______ to the factory.