第二组答案：

　　artificial,fake,false都含有一定"假的"之意.

　　artificial 人造的,假的,矫揉造作的,不自然的 eg.an artificial lake人工湖; artificial smile做作的微笑/假笑; an artificial earth satellite人造地球卫星

　　fake adj.假的,伪造的,冒充的 n.假货,赝品(the antique is a fake那古董是件赝品)

　　false 假的,不真实的,带有欺骗性的假象 eg.false goods假冒商品

　　答案:ABBDCC

　　1.There were some artificial flowers on the table.桌上放着一些假花.

　　2.Some criminals were ptinting fake dollar bills until they were arrested.有些罪犯在被逮捕前一直印假美钞.

　　3.Someone shouted "Fire!" but it was a false alarm and there was no danger.有人喊"失火了",可那只是一场虚惊并无危险.(false alarm 虚假的警报)

　　4.She was too nervous to make an artificial manner.她太紧张了,做出了不自然的举止.

　　5.Three plus three is seven.True or false?三加三等于七.对还是错?

　　6.His friends played him false.他的朋友欺骗了他.(play sb. false 对某人不忠实,欺骗某人)

　　第三组答案

　　some time,some times,sometime,sometimes,some day,the other day

　　some time n. "相当长的一段时间" adv. "某个时候,某一天"=sometime

　　some times adv. "数次"

　　sometime adv. "某个时候,某一天"(可指过去,也可指将来),可用some time代替

　　sometimes adv."有时,间或"=now and then /from time to time

　　some day "有朝一日,有一天"(只指将来的一天),常与表示将来的时态连用,也可写成someday

　　the other day "那一天,前几天"(只指过去的某一天),仅用于过去时态中

　　答案:DDBCAC

　　1.Some day I'm going to make a journey round the world.有朝一日我要环游世界.

　　A.The other day(只用于过去时) B.Some times C.Sometimes D.Some day(用于将来时)

　　2.We sometimes have letters from her.我们有时收到她的来信.

　　3.I saw her sometime in July.我在七月的某一天见到过她.

　　A.some day(用于将来时) B.sometime(也可用some time) C.some times D.sometimes

　　4.The other day,as I was walking up to town,I saw a strange man.在我走去镇上的那一天,我看见一个奇怪的人.

　　A.Some day(用于将来时) B.Sometime(概念较模糊,不清楚哪天) C.The other day(用于过去时,特指那一天) D.Some time

　　5.Marx stayed in Belgium for some time.马克思在比利时待了一段时间.

　　6.I met your elder sister in the museum some times.我好几次在博物馆碰见你姐姐.