I like getting up very early in summer. The morning air is good _______.
| A．to be breathed | B．being breathed |
| C．breathing | D．to breathe |
People have the belief ______ factories should produce fewer things from raw materials, ______the supply is growing smaller and smaller.
| A．which; that | B．that; of which | C．that; whose | D．which; whose |
_______ he lives in a rich family, he started from the lowest position as an ordinary worker to make his living.
| A．While | B．Unless | C．As | D．Since |
The big company should be ready to ______ many talents who can often _____ a new idea for increasing sales.
| A．take in; come across | B．take on; come on |
| C．take on; come up with | D．take in; come up with |
Because of the bad management, this restaurant was not _______ it was 10 years ago.
| A．half as good as what | B．as half good as that |
| C．as good as half what | D．half as good as that |
We can never expect ______ bluer sky unless we stop ______ industrial waste going into _____ atmosphere.
| A．a; the; the | B．the; the; the | C．a; /; the | D．the; /; / |