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t allowe d D 。 t allo w B . is allo wed C . aren 39。 安順 ) — Excuse m e, sir , s m o king ___ _ in the gas st ation . — Oh, I 39。 9 . Lots of people s pea k Chin ese n ow . Chinese _ _ _ _ _ _ _ _ _ _ b y lo ts of people no w . 10 . The y pr oduce si lk in Suzh ou . Silk _ _ _ _ _ _ _ _ _ _ _ _ in Suzhou . 1 1 . People us e metal f or m aking machines . Metal _ _ _ _ _ _ _ _ f or making m achi nes b y pe o ple . 12 . Do the y of ten t alk about th is question ? _ _ _ this qu estion of ten _ _ _ _ _ _ _ ab out _ _ _ _ _ _ _ _ ? is spoken is produced is used Is talked