sales of cars up by 30% last year, the traffic in Beijing has become increasingly terrible.
| A．With | B．Since | C．For | D．As |
The machine has been made easier for it____.
| A．to operate | B．operated |
| C．being operated | D．to be operated |
----I’ve finished cleaning all the furniture in the room.
----I don’t think so. What about ____ on the balcony?
| A．the one | B．it | C．that | D．those |
We are in a difficult position in____ we have nobody properly qualified for this work.
| A．that | B．when | C．what | D．where |
I have no one ____ me, for I can deal with it all by myself.
| A．to help | B．to have helped | C．help | D．helped |
______ important thing in life is to have a great aim, and ______ determination to attain it.
| A．An ; 不填 | B．A ; the | C．The ; the | D．The ; 不填 |