[解析]
C CA
M:How many children are there in this school?
W:More than 900,nearly a thousand.
M:What foreign languages do they learn?
W:Most of them study English,and others learn Russian,Japanese,French or German.
M:I see.How long have you been teaching English?
W:Ever since I came back to China.Let me see.That was almost twenty years ago.
M:So you once lived abroad?That's interesting.Where were you?
W:Well,I was born in China,but I grew up in New Zealand.
M:No wonder your spoken English is very good.
W:Thank you.But I don't speak it so fluently now.