______ his age, he did it quite well, so don't ______ him any more.
All of us don’t believe the fact__ our best student failed in the competition.
-----I forget the name of an old school friend at the party. -----_____. It must have been very embarrassing.
It is reported that Russia uses____ energy as Uklaine.
----Have you seen Tom and Mary?----I haven’t seen____ of them.
I rang you several times yesterday but couldn’t____.