. If law and order _____, neither the citizen nor his family is safe.
My deskmate is still a puzzle to me; at one moment he is quiet while at another he _____ be quite active.
My neighbour’s dog is fierce and dangerous, so I think he ought to keep it in the yard _____ it attacks any more children.
Many approaches have been _____ to control the spread of the terrible virus “Ebola” so far.
The failure of their friendship was closely related _____ other people’s privacy.
—Will Jane join in our party tonight?—Yes, but I’d rather she _____.