___________2010 Shanghai World Expo will launch ___________underground network of 700 kilometers of pipes to provide natural hearting and cooling.
| A．The; an | B．The; the | C．不填；the | D．不填；an |
______ to the climate here, the old couple would rather live here for the rest of their life _____move to another city.
| A．Having accustomed; than | B．Accustomed; than |
| C．Accustom; rather than | D．Accustoming; rather than |
I ____ Mr. White at that time, otherwise I wouldn’t have asked you for some information about him.
| A．hadn’t known | B．don’t know | C．didn’t know | D．haven’t known |
It was three o’clock _______ he came back from work.
| A．since | B．when | C．that | D．before |
It shames to me to say it, but I told a lie when _______ at the meeting by my boss.
| A．questioning | B．having questioned | C．questioned | D．to be questioned |
I didn’t know it could do terrible ______to your heart and lungs or ______was more difficult for smoking couples to become pregnant.
| A．ruins; that | B．damage; it | C．damage; that it | D．sufferings; that this |