Firms that use computers have found that the number of staff _____ is needed for quality control can be greatly reduced.
Mr. Brown was sentenced to 10 years’ imprisonment(监禁) for ______ murder.
There is some doubt ____ the sick schoolboy can join in the English evening party on Sunday.
---- How long ____ at this job? ---- Since 1990.
___ I know he will stay here for half a year.
_____ the government agrees to give extra money , the theatre will have to close.