We can never expect ____ bluer sky unless we create _____ less polluted world.
| A．a; a | B．a; the | C．the; a | D．the; the |
Very soon the message drew dozens of responses from his classmates and other teenagers,all ______ about their excessive workload during the National Day holidays.
| A．complained | B．complaining |
| C．to complain | D．were complaining |
---Pity you missed the lecture on nuclear pollution.
---I ______ it, but I was busy preparing for a job interview.
| A．attended | B．had attended |
| C．would attend | D．would have attended |
The food ran out early, but______ the party was a success according to the guests present that evening.
| A．therefore | B．meanwhile | C．otherwise | D．however |
______ when we passed by its nest.
| A．Up into the blue sky did the bird fly |
| B．Up into the blue sky flew the bird |
| C．Up into the blue sky the bird flew |
| D．Flew up into the blue sky the bird |
Henry made a list of all the possible solutions,______ helpful in handling the present situation, though.
| A．none of them | B．none of which |
| C．all of which | D．all of them |