--- Better get down to your work．Jack．
--- __________ ．
A．It’s my pleasure B．Suit yourself
C．Mind your own business D．You’re welcome
A ship in the harbor is safe，but that’s not __________ ships are built for．
A．what B．that C．why D．how
In Europe unemployment hit a new record with young people __________ it harder to get jobs．
A．to find B．finding C．having found D．found
Nelson Mandela is，__________ the greatest man of the 20th century，certainly among the most extraordinary leaders．
A．if there B．if any C．if not D．if so
--- Look，someone has left the fridge door open again．
--- Well．It __________ me，Morn．
A．isn’t B．won’t C．hasn’t been D．wasn’t
You fool! You __________ all the people in the car yesterday if it had not been for me．You were so drunk while driving!
A．could kill B．might have killed
C．had killed D．should have killed
