Under no circumstances _______ the difficulties when they were on an expedition to the Antarctic．
| A．they gave way to | B．did they give way to |
| C．they had given way to | D．had they given way to |
The great use of school education is not so much to teach you things _____ to teach you the
art of learning.
| A．as | B．that | C．than | D．but |
I heard that you really had a wonderful time at John's birthday party, _____?
| A．didn't I | B．didn't you | C．hadn't you | D．will you |
Modern science and technology has _____ communication between people far apart.
| A．made convenient | B．made it convenient |
| C．made it convenient for | D．made it convenient to |
Under no circumstance _____ to tell lies to parents.
| A．children are allowed | B．are children allowed |
| C．children will allow | D．will children allow |
The professor said he could talk on _____ interested the audience.
| A．any topic | B．which topic |
| C．whichever topic | D．the topic he thought it |