2.

24. ____ five minutes earlier, you could have seen them off.

49.    , drink-making techniques, equipment and packaging are exhibited in the exhibition.

（  ）51. Just like love, faith and doing good for others, money is also important to our life.

61. 真正的友谊就像健康一样，失去了才觉得宝贵。

（  ）54. It’s impossible for us to avoid the economic crisis, so we have to learn to live through it.

56. 我们应该有远大的志向，不应该安于现状。

32. You have been working on this morning. It‘s time you ____ .

20. The new stadium being built for the next Paralympic Games will be ____ the one that has been destroyed.

16. Experiments of this kind ____ in both the U.S. and Europe well before the Second World War.

( ) 12. The fish which are caught by a fisherman in South America may be made into pet food.

27. I devote my whole day to ____ the English grammar.