Unit 1 Past and presentReading comprehensionPart A21.a 2.a 3.b 4.b 5.a 6.cPart B21.Because the air pollution was so bad.2.Smoke from many factories caused the smog.3.The air is clean and people never see smog there.4.People from all over the world have come to live in London since the 1950s.5.Because now he can eat food from India,China,Italy and Germany in his neighbourhood.6.She likes living here.Vocabulary building1.lonrly 2.abroad 3.pollution 4.environment5.since 6.conditions 7.communication 8.impossibleGrammarPart A1.has forgotten 2.has been 3.have not finished 4.have livedPart B1.Q:Have you seen A:I haven't 2.Q:Has he spent A:He hasn't3.Q:Have you seen A:I have 4.Q:Have you written A:I haven't5.Q:Have you given A:I have 6.Q:Has she gone A:she hasPart C1.has lived 2.has been 3.hasn't studied 4.has been 5.has learnt 6.has workedWritingPart A1.has 2.different 3.undergroud 4.mice 5.lonely 6.for 7.studiedPart B1.have decided to write about the changes in West Hill2.have visited a park in West Hill3.have spoken to two old people there4.have lived in West |