You should look _______ into the matter to get more information about it.
| A．farther | B．far | C．farthest | D．further |
He has left his book here on _____, so that you can read it.
汇
| A．purpose | B．intention | C．aim | D．meaning |
The magician picked several persons from the audience and asked them to help him with the performance.
| A．by accident | B．on occasion | C．at random | D．on an average |
The open university was started in order to help those who _____ having a university education when they were young.
| A．stopped | B．failed | C．missed | D．ceased |
Jack almost fell off the cliff, but managed to _____ until help came.
| A．keep on | B．catch on | C．count on | D．hang on |
It isn't so much whether he works hard; the question is whether he works _____.
| A．above all | B．in all | C．at all | D．after all |