At times the balance in nature is____, resulting in a number of possibly unforeseen effects.
| A．confused | B．puzzled | C．disturbed | D．troubled |
The driver was still________what had happened when he was sent to hospital, but after a while he lost________.
| A．unconscious for; consciousness |
| B．conscious of; consciousness |
| C．conscious of; conscious |
| D．conscious of; unconscious |
________，I have to put it away and focus my attention on study this week.
| A．However the story is amusing |
| B．No matter amusing the story is |
| C．However amusing the story is |
| D．No matter how the story is amusing |
—Smoking is bad for your health.
—Yes, I know. But I simply can't________.
| A．give it up |
| B．give it in |
| C．give it out |
| D．give it away |
More than one student________he is________a teacher to them.
| A．thinks; more than |
| B．think; no more |
| C．thought; no |
| D．thinks; more |
Grandpa used to tell us something about the “Cultural Revolution” ________he had time to spare.
| A．as soon as |
| B．as |
| C．so that |
| D．whenever |