Kenny and Bobbi McCaughey live in Iowa. They have a big family. Mikayla is the oldest child in the family. She is six years old. The other children are Brandon, Joe, Kelsey, Kenney, Natalie, Alexis and Nathan. They are all five years old. Why are they all the same age? ______ . They are septuplets!
　　It is hard work to look after seven babies at the same time. ______ . In the beginning, many people helped them. They helped to feed, clean, and dress the babies. Every week , the septuplets used about 170 diapers(尿布)!______ .
Now the children are older. The septuplets started school this year. But they go to school at home, like their big sister, Mikayla. When Mikayla was ready for school, Kenny and Bobbi decided to teach her at home.______ .Now Bobbi is the teacher for all eight of her children.

A．They drank a lot of milk, too. B．Because they were born together. C．Last year, Bobbi was Mikayla’s teacher. D．Kenny and Bobbi are interested in cooking. E. But Kenny and Bobbi didn’t look after them alone.