I’m very grateful to Professor Smith, without __________ help I would have never have got this far.

whatever great achievements the future may have in store for China, ______ is likely that many of them will be born in Zhongguancun. 

–Let’s go to the cinema by taxi.-Don’t worry, we have __________ time.

---- “Look at that lady on the stage. She’s already forty.”--- -“You are joking. She doesn’t look ________.”

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