Ronald Amundsen is considered to be one of the greatest ________ in history because he was the first man to reach the South Pole (南极).

I’m sorry, I should not have been so rude to you. — You _______ your temper but that’s OK..

The weight-loss pills really ______ and she is becoming slimmer and slimmer

That is the day ______I’ll never forget.

In the near future, more advances in cloning technology by scientists