It isn't polite to laugh at people behind their back. You it when other people do it to you.
A.didn't like B.won't like C.don't like D.haven't liked
Professor Smith’s theories explain how the universe works, ?
A.does he B.is he C.don’t they D.aren’t they
— do you walk every day?
—Over 3 kilometers.
A.How long B.How soon C.How far D.How often
His voyages were a huge achievement that people still remember him.
A.such B.too C.very D.so
There may be other planets like the Earth. That crazy.
A.sounds B.looks C.becomes D.gets
Luke’s mother will be proud him if he wins the reading competition.
A.in B.at C.for D.of
