If we want to succeed, we need to __________ the quality of challenging difficulties.
| A．possess | B．charge |
| C．exchange | D．analyze |
The professor was ________ to give us a lecture this afternoon, but it has been cancelled because of the delayed flight.
| A．demanded | B．hoped | C．scheduled | D．arranged |
It was announced that only when the terrible disease was under control _______ to return to their homes.
| A．the residents would decide |
| B．would the residents decide |
| C．would the residents be decided |
| D．the residents would be decided |
—Some Chinese students find it difficult to understand native speakers when in London．
—Exactly, they've learned a lot about grammar and known many words.
| A．if only | B．now that | C．even if | D．as if |
No one in our class but Tom and Ithat a new teacher is going to teach us English．
| A．knows | B．know | C．have known | D．am to know |
Had it not been for the haze（霾）weather phenomenon, there fewer car accidents in Beijing then．
| A．would have been | B．were |
| C．may be | D．would be |