1.The headmaster wanted the new classroom building___as soon as pos-sible.
 A.to put up               B.to be put up
 C.to have been put up      D.being put up
2.At the shopping-centre,he didn’t know what____and____with an empty bag.
 A.to buy;leave       B.to be bought
 C.to buy;left         D.was so buy;leave
3.The policeman put down the phone,____with a smile on his face.
 A.satisfied     B.satisfying    C.to be satisfied    D.having satisfied