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
