---There’s someone knocking on the door. Who _________ it be?
---It must be John. He promised to be here at 8:00.
| A．must | B．can | C．need | D．shall |
She is so _____ that she cried for days when her pet rabbit died.
| A．sensitive | B．sensible | C．imaginative | D．impressive |
----Tom is good at lots of things but you can't say he is _____.
----I can’t agree with you more. In fact no one is.
| A．complete | B．splendid | C．perfect | D．wonderful |
The medical reform in that country turns out to be _________ failure, but, as we know, success often comes after ________ failure.
| A．a, a | B．the, the | C．a, / | D．/ , / |
The eighteenth and nineteenth centuries _____ the widespread use of electricity and the birth of the steam engine , leading to the development of factories and cities.
| A．watched | B．observed | C．saw | D．showed |
Nobody could have had _____ childhood than myself. Instead of children’s play and adventure , I was driven by a desire to study.
| A．the happier | B．a happier | C．happier | D．the happiest |