作业帮mary is ten,kate is twelve.(合并成一句)mary is___ ___ ___ ___kate怎么填
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mary is ten,kate is twelve.(合并成一句)mary is___ ___ ___ ___kate怎么填
mary is ten,kate is twelve.(合并成一句)mary is___ ___ ___ ___kate怎么填
mary is ten,kate is twelve.(合并成一句)mary is___ ___ ___ ___kate怎么填
合并为：Mary is two years yonger than Kate.