While reading an interesting story book in my room，______________.
A．the light suddenly went out
B．the doorbell rang
C．someone was shouting outside
D．I heard someone shouting outside
Mr．Black is willing to do ______________ Mrs．Black tells him to do．
A．whichever B．however C．whatever D．whenever
Lora，you ____________ leave all your books on the floor like this!
A．wouldn’t B．mustn’t C．needn’t D．may not
I must admit you _____________ but I'm afraid the answer is still no．
A．will try B．try C．have tried D．had tried
Paul fell down and broke his wrist，____________ was a pity．
A．which B．what C．that D．it
—Oh，my God! I've just broken the vase that my mother likes best．
—______________．It can’t be helped．
A．That’s fine B．All right C．Never mind D．Not at all
