---John, how did your English exam go?
---I thought I ____, but in fact I came in the top 10% in the class.
| A．should have failed | B．couldn’ t have failed |
| C．might have failed | D．mustn’ t have failed |
________ it comes to the increasing use of motor vehicles in the cities，some people think it should be limited．
| A．Because | B．Once | C．When | D．While |
Only in recent years ________ realized that ability training is more important than profession
Training.
| A．people have | B．people had | C．were people | D．have people |
I can hardly imagine his arguing with his boss. He always ________ me as a cool-headed man
| A．strikes | B．takes | C．treats | D．regards |
The voice on the phone was exactly as she_______ it would sound，just like her mother’s．
| A．dreamed | B．had dreamed | C．would dream | D．was dreamed |
You are always saying that everyone should be equal，and this is _____________ I find too difficult to realize．
| A．why | B．where | C．what | D．how |