If you continue to use old-fashioned (过时的) language, young people will ________that you haven’t kept up with today’s thinking and knowledge.

is often ______ with freshness, happiness andother beautiful things.

I failed in the final examination last term and onlythen_____ the importance of studies.

The girl was frightened by the tiger ______ her eyes _____ . [ ]

___ smoking, he would not have got cancer in thelung.