—Our teachers and parents always warn us not to smoke.
—Yes, actually, the risk of heart disease is a powerful argument ____ smoking.
| A．against | B．for |
| C．into | D．at |
They must have been enjoying themselves there，or they __________ so long．
| A．wouldn’t stay | B．needn’t have stayed |
| C．wouldn’t have stayed | D．couldn’t stay |
—Did you enjoy your journey to the village?
— __________．We had driven more than 3 hours before we found the right way．
| A．Of course | B．Quite a lot | C．Not exactly | D．No problem |
He telephoned to inform me of your birthday．____________，I would have known nothing about it．
| A．However | B．Otherwise | C．Therefore | D．Thus |
Actually，the London Olympic Park is built _____________ there used to be a poor area called East London．
| A．what | B．when | C．where | D．why |
I find that looking after children is a fun and challenging job ___________ you need to be patient and careful．
| A．That | B．which | C．where | D．when |