来源：互联网 2011-03-04 11:00
I came across an old friend of mine in a department store. (chance to meet，bump into，come upon，meet...accidentally/unexpectedly/by chance/by accident)
You are really a thick-skinned and gate-crasher.
Don't be envious. Ill-gotten money comes easily and goes easily too.
see eye to eye：Do you see eye to eye with him on that plan?
takes the trouble：The teacher often takes the trouble to instruct his pupils.
But the conspirators leave no avenue unexplored to re-establish contact with Britain.
by hook or by crook：He just did the work by hook or by crook.
Did you see that plane? It seems that it just vanished from sight.
as quiet/silent/still as a mouse：She was as quiet/silent/still as a mouse and left.
Bring a cow to the hall and she will run to the byre. (fail to appreciate sb's kindness/not know how to appreciate favor)