Time is pressing; it’s impossible for me to get there in an hour, ______ the possible delays．
| A．accounting for | B．answering for |
| C．allowing for | D．heading for |
So far no life has been found outside the earth, but while some scientists are actively searching for living things in outer space, others firmly believe there ____ .
| A．mustn’t be | B．may not be |
| C．can’t be | D．won’t be |
The price of the flat now is ____ that last year.
| A．as twice high as | B．twice more expensive than |
| C．as high as twice | D．twice the amount of |
— Did you watch the football match last night?
— Yes, that’s a most close one, and eventually neither could defeat ____.
| A．both | B．the other | C．another | D．each |
They chatted ____ coffee about their experience as volunteers during the charity.
| A．over | B．on | C．to | D．with |
| A．couldn't see | B．shouldn't have seen |
| C．mustn't have seen | D．can't have seen |