1.Susan _______（change）a lot since I last met her.2.Volunteers are trying their best to help______(hungry)in the world.3.If you don't see doctor at once,you'llget even______（ill）later on.要原因喔,
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1.Susan _______（change）a lot since I last met her.2.Volunteers are trying their best to help______(hungry)in the world.3.If you don't see doctor at once,you'llget even______（ill）later on.要原因喔,
1.Susan _______（change）a lot since I last met her.
2.Volunteers are trying their best to help______(hungry)in the world.
3.If you don't see doctor at once,you'llget even______（ill）later on.
要原因喔,
1.Susan _______（change）a lot since I last met her.2.Volunteers are trying their best to help______(hungry)in the world.3.If you don't see doctor at once,you'llget even______（ill）later on.要原因喔,
1.Susan ____had changed___（change）a lot since I last met her.(用过去完成时,since后面的从句用的是过去式,过去的过去就是过去完成时)
2.Volunteers are trying their best to help____the hungry__(hungry)in the world.（志愿者们尽力帮助世界上饥饿的人们,这里要用到hungry的名词形式the hungry 表示一类人;）
3.If you don't see doctor at once,you'llget even___worse___（ill）later on.（用比较级,比之前病的更厉害.ill 的比较级是worse）
has changed
the hungry
worse
1 had changed 有since，用完成时，有I last met her，用过去完成时
2 the hungry the+形容词 表示一类人
3 worse 由句意可知此处应为病情更严重