The Dead Sea is so salty ____ it’s hard for anything to live in it, ____ is why it’s called theDead Sea.

do you like to do–Sometimes I music.

The novel was completed in 1978，the economic system has seen great changes．

One of the many _____ of my foreign travel is that I have learnt how to solve unexpected problems.

He was ________and died of lung cancer at an early age.