Hey! Everyone in the office was at the dinner party in honor of MrCharles except youWhat happened?— I ______ after Mike, my colleagueHe was badly ill

My friends have given me lots of_______．They’re very useful.

We ______certain livings as birds not because they have long legs or short legs,but because they all havefeathers.

It was not until I was injured in acar accident ______ the real American society．

The scientists are now trying to discover what use can be ____such a material ____ the problem.