It was not until the end of the trip ______ I realized what a good feeling it was to have helped someone in trouble.
| A．as | B．that | C．where | D．when |
You said the books were on the shelf ,but there.
| A．there was no oneycy | B．there were none |
| C．there were no ones | D．was none |
Within the last year, scientists have come closer than ever .
| A．to deciding which of the questions is right |
| B．to decide which of the questions is right |
| C．deciding whether the question is right or not |
| D．and decided which of the questions is right |
It is heartening to see millions on the earth who had nothing but a record of misery and hunger
the chance to improve their life.
| A．having | B．to have | C．have | D．who have |
Patrick has never learned a foreign language, .
| A．nor does he think he has to | B．neither he thinks he has to |
| C．he thinks he has not to ,either | D．he doesn’t think he has to |
His has changed but he has kept the fine qualities of a scientific researcher.
| A．state | B．status | C．station | D．statue |