Many kinds of animals and plants die ____ every year.
A down         B away             C out            D from

—It is strange that Dave didn’t respond________any of my e­mails.
—Something must have happened to him.

He can’t make both ends meet due to spending money____________.

Although it was not named ________ 1782, this kind of metal was used as early as 5300 BC．
A．in                   B．for            C．until          D．since

The newly-built shopping mall provides goods that compete ______ product quality, reliability and above all variety. 

The Christmas gifts need to be ready       next Friday.

Soon after dinner, Wayne drove off ______ the direction of Paris.

By offering free access to a wide range of public facilities, out school now is a quite satisfying place for study,         its poor accommodation.

______ their house in London, they also have a villa in Spain.

The twin brothers are very similar ______ appearance but quite different _____ hobbies.