Having a trip abroad is certainly good for the old couple, but it remains ______ whether they will enjoy it.
It is the greatest happiness on earth ______.
To play fair is as important as ______.
---- Go to the theatre with me, will you? ---- I should like ______, but I don't have time.
I don’t know her and I don’t ______ .
Now we could not do anything but ______ for him here.