The problem ____________yesterday at the meeting was about pollution.
A.to discuss B.to be discussed C.discussed D.being discussed
How can the bird escape _________?
A.to shoot B.to be shot C.shooting D.being shot
_____more time, he’ll make a first-class tennis player.
A.Having given B.To give C.Giving D.Given
22. While building a tunnel through the mountain, _______.
A.an underground lake was discovered B.there was an underground lake discovered
C.a lake was discovered underground D.the workers discovered an underground lake
—Mum ,why do you always make me eat an egg every day?
—______enough protein and nutrition as you are growing up.
A.Get B.Getting C.To get D.To be going
Robert is said _______abroad, but I don’t know which country he studied in .
A.to have studied B.to study C.to be studying D.to be studied
