Unit 4 At the farmPB Lets learn(P42)习题一、看图片,在四线三格上写出对应的单词或短语。1234二、选择。( )1These are _.AcowsBcowCa cow( )2This _ my farm.AamBareCis( )3They _ so cute.AamBareCis( )4- Are these green beans? - _AYes, they are.BYes, they arent.CNo, they are.三、翻译句子。1These are sheep. _2Its big._3Are these horses?_4Yes, they are._5No, they arent._