how long is your legs还是how long are your legs?

how long is your legs还是how long are your legs? How long should your legs be? your how legs are long(?) 连词成句 how long are your legs there are 70 cm请问there是they还是? HOW long are you legs HOW L() ARE YOUR LEGS 猜谜语 How long should your legs be? Your legs are long.同义句转换 How long is your how long are you legs改单数句 your,long,with,legs,she,is(连词成句） How long are your leg?修改病句