Generally speaking, clothing made of man-made fibers is less superior than _______ made of natural fibers like cotton, wool or silk.

We are confident that the step the Chinese government has taken to cope with the current crisis is ______ of great significance.

Did Lisa tell you      in the letter？

Mum disliked ______ when I behaved badly in front of the guests.

 Kitty and I felt sick for ____________.