参考答案：

56．bag后加of 57．√ 58．tell→told 59．all后加the

60．去掉the 61．or→and 62．after→before 63．are→is

64．a→the 65．other→others

56．第一个in后加a 57．class→classes 58．decide→decided

59．has→have 60．by→on 61． √ 62．and→or

63．You→Your 64．去掉the 65．well→good

56． interested→interesting 57． questions→problems

58． about→with／to 59． which后加we 60． what→how

61． and→or 62． many→much 63．√ 

64． ask后加for 65． 去掉later

56． had→had to 57．去掉with 58．√ 59． Thing→Things

60． have→are 61． liked→like 62． reach→to reach

63． invention→inventions 64． away后加from 65． call→called

56．How后加do 57．soon→long 58．longest→longer

59．√ 60．a→the 61．few前加a 62．field→fields

63．Late→Later 64．so→as 65．去掉to

56．a→an 57．√ 58．home前加at

59．informations→information 60．e-mails→e-mail

61．Beside→Besides 62．去掉the 63．help→helps

64．第一个make→have 65．more→much

56．haven’t后加had 57．chickens→chicken 58．eats→eat

59．but→and 60．another→other 61．foods后加that或去掉are

62．√ 63．去掉a 64．by→in 65．Every→Each

56．In→On 57．第二个a→the 58．found后加it

59．去掉第一个to 60．ago→before 61．√ 62．put前加had

63．tube→tubes 64．去掉been 65．exactly→exact

56．twenty-one→twenty-first 57．with→from 58．can→will

59．That→There 60．去掉in 61．√ 62．去掉第一个more

63．few→fewer 64．now前加do 65．watch→watching

56．one→every 57．part后加in 58．had→were 59．car→cars

60．usual→unusual 61．is→was 62．√ 63．cars前加the

64．much→more或much后加more 65．win→winning

76．recently→recent 77．Chinese→China 78．lives→life

79．made→making 80．去掉of 81．past前加the 82．eat→ate