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10 years ago，                     only one classroom building in our school．And in 10 years，________ five classroom buildings in our school．

A．there will be，there are                            B．there was，there will be

C．there will be，there was                                    D．there are，there will be；

10 years ago， _________ only one classroom building in our school. And in 10 years， _________ five classroom buildings in our school.

10 years ago， _________ only one classroom building in our school. And in 10 years， _________ five classroom buildings in our school.