1) the coins which show the queen’s head on the reverse side, into circulation in summer 2008. came have come has come had come 2) the ‘espresso revolution’ of the 20th century turned coffee a gastronome product in upon into out

1) The coins which show the Queen’s head on the reverse side, came  into circulation in summer 2008.
Монеты с изображением головы королевы, на обратной стороне, вошли в обиход (стали использоваться) летом 2008 года.

2) The ‘espresso revolution’ of the 20th century turned coffee into a gastronome product. 
Революция двадцатого века (‘espresso revolution’) превратила кофе в гастрономический продукт.