And how old are they?

And how old are they? "How many children have you,and how old are they?" asked the 解一道英语数学题,“How many children have you,and how old are they?"a How old are they?改成中文 How old are they?同义句转换 How old are they?They are 19 ___. How _____(/,old)are they? They are ten. how are you and how old are you? 英语阅读短文回答问题阅读：How old are they?Jack,Dick,Ann and Kate are bro who are you and how old are you? They want to know how old you are. How old are your parents?A.They are forties B.They are thirt