— I’m sorry．I ________ at you the other day．
— Forget it．I was a bit out of control myself．
A． shouldn’t shout
B． shouldn’t have shouted
C． mustn’t shout
D． mustn’t have shouted
_____ with so much trouble，we failed to complete the task on time．
A． Faced B． Face
C． Facing D． To face
________ around the Water Cube，we were then taken to see the Bird’s Nest．
A． Having shown B． To be shown
C． Having been shown D． To show
I have ______ all the papers but I still can’t find my notes．
A． looked for B． looked through
C． looked after D． looked out
_____in the sports world，a sportsman needs to train constantly to keep himself in best condition．
A． Survive B． Surviving
C． To survive D． Survived
Teenagers ________ their health because they play computer games too much．
A． have damaged B． are damaging
C． damaged D． will damage
