Professor Hawking stepped into the office I knew that there was no hope.
| A．Unless | B．Now that |
| C．Although | D．The moment |
I was ashamed _________ lied to my mother.
| A．to be | B．of having | C．that | D．of being |
Doctors are doing research to find out what happens physically when people _________ smoking.
| A．quit | B．decline | C．depart | D．reserve |
I didn’t find his office. If only Ihis address!
| A．had taken | B．have taken | C．took | D．would take |
People wrote letters to get in touch in the past. Nowadays email has the way people communicate.
| A．directed | B．conveyed | C．transformed | D．sponsored |
Nancy was very disappointed to hear the news. I wish I her about that.
| A．hadn’t told | B．didn’t tell | C．wouldn’t tell | D．can’t tell |