Nowadays people are more concerned about the environment________they live.
| A．what | B．which | C．when | D．where |
The teacher assigned the task to the three boys and ________ did his share.
| A．any | B．all |
| C．every | D．each |
If you don't go after what you want, you will never have ________.
| A．one | B．it |
| C．them | D．these |
—What are you two whispering about over there?
—Oh, ________. Just small talk.
| A．no | B．nobody |
| C．none | D．nothing |
—What do you think of modern music?
—It is often considered not as good as ________ of the past.
| A．it | B．that |
| C．this | D．one |
A US report predicts that in 15 years' time the economy in Asia will be larger than ________ of North America and Europe combined.
| A．what | B．that |
| C．one | D．those |