It is no use thinking about your ________ youth.
The room ______ 10 meters across is large enough for a single man ______ .
This is the girl ______ father was just spoken by us.
There are some health problems that, when ______ in time, can become bigger ones later on.
He commanded that all the gates ________.
As is known to us all, English books of this kind ________ well in middle schools.