I consider________ a great honor that I have been invited to give a speech.
| A．it | B．that | C．this | D．what |
The fleet made several expeditions _______ the exploration was stopped.
| A．when | B．before | C．while | D．since |
The Tibetans have lived in the Himalayas for centuries and have adjusted to the conditions _________.
| A．at such great height | B．at such a great height |
| C．on such great height | D．on such a great height |
______ their return, they were praised as national heroes.
| A．At | B．By | C．On | D．With |
One of the man held the view ____ the book said was right.
| A．that what | B．what that | C．that | D．whether |
Have you nearly finished? Time_______.
| A．is run out | B．has been run out | C．is running out | D．has run out of |