Despite their______of interest, Fleming kept trying to develop chemical ______ it would be safe and effective.
| A．lack, so as to | B．lacking, so as to |
| C．lack, so that | D．lacking, so that |
After graduation she reached a point in her careershe needed to decide what to do.
| A． | that | B． | what |
| C． | which | D． | where |
—I have got a headache.
—No wonder.You___in front of that computer too long.
| A．work | B．are working |
| C．have been working | D．worked |
The melon the Smiths served at dinner would have tastedif it had been put in the fridge for a little while.
| A． | good | B． | better |
| C． | best | D． | well |
He was told that it would be at least three more months______he could recover and return to work.
| A．when | B．before |
| C．since | D．that |
—What do you think of the performance today?
—Great!____but a musical genius could perform so successfully.
| A．All | B．None |
| C．Anybody | D．Everybody |