Работа на пару минут и 22 б + 11 за лучший in your notebook, add comments to these facts. use which. пример mobile telephones emit radiation, which might be dangerous. 1)it's difficult to find a job if you don't have basic computer 2)english has practically become the world's international 3)some countries refuse to sign a ban on producing chemical 4)the 2008 olympics will be held in

Можно вот так

1) It's difficult to find a job if you don't have basic computer skills, which is very common job requirement now
2) English has practically become the world's international language, which is convenient for English-speaking counties.
3) Some countries refuse to sign a ban on producing chemical weapons, which is a very inhumane.
4) The 2008 Olympics will be held in China, which has long-lasted excellent records in sport.

Со вторым помучилась, можешь что-то изменить
it's difficult to find a job if you don't have basic computer skills which is (might/can be) useful in your future job 2)English has practically become the world's international language, which is a main language in many countriies 3)Some countries refuse to sign a ban on producing chemical weapons which causes many dangerous to our health 4)The 2008 Olympics will be held in China, which is a well known country in a sports area