2.
as a result,break up,in danger of,according to,attach…to…,stand for,
above all,watch over,die out,in relief,burst into laughter,sort out
(1) The Soviet Union ______ on December 25th 1991.
(2) The farmers there use specially trained dogs to ______ their sheep at night.
(3) The English of today is very different from the English of 500years ago.In time,some words even ______ completely.
(4) The economy is ______ collapse(崩溃) unless there is a revolution.
(5) What is"best friends"?You laugh; I laugh.You cry; I cry.You fall,I ______ and then I fall too because I was laughing too hard.
(6) Workers should be paid ______ how much work they do.
(7) I'd like to buy a house-----modern,comfortable and ______ in a quiet neighborhood.
(8) Seeing the spoiled child was safe,the old man sighed ______ .
(9) It is unnecessary to ______ great importance ______ this letter.
(10) He fell off the bike and hurt his legs. ______ ,he had to stay away from the school for nearly two or three weeks.