So sudden ______ that the enemy had no time to escape．
A． did the attack
B． the attack did
C． was the attack
D． the attack was
Look out！Don’t get too close to the house ________ roof is under repair．
A． which B． whose C． what D． that
I have an appointment _______ Dr．Brown，but I need to change it．
A． to B． off C． with D． from
— 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
