Last term our maths teacher set so difficult an examination problem _____ none of us worked out.
| A．that | B．as | C．so that | D．which |
Shelly had prepared carefully for her biology examination so that she could be sure of passing it on her first_________.
| A．intention | B．attempt | C．purpose | D．desire |
Many people like white as a color as it is a _____ of purity.
| A．symbol | B．sign | C．signal | D．symptom |
He lost his way in the forest, but he managed to get through it ______.
| A．completely | B．eventually | C．quickly | D．automatically |
I ______ of your trying to earn some money, but please do not neglect your studies.
| A．permit | B．promise | C．agree | D．approve |
He can speak English, German, French and Japanese. He is nearly a man with a (an) ______ for language.
| A．gift | B．present | C．ability | D．skill |