Having a trip abroad is certainly good for the old couple, but it remains _____ whether they will enjoy it.
Not until he met with the difficulty _______ the importance of group work.
The thief must have hidden somewhere in the _______ area.
I do not want to accuse him _____ telling lies.
Local villagers ______the doctors with the people ______ in the bus crash.
Time, _____correctly, is money in the bank.