Nine and zero(is?are?make?)=nine

Nine and zero(is?are?make?)=nine 为什么nine and one 是is ten而不是are —Which floor do you live on?--The ___ floor,and my room number is ___.A.ninth; nine zero two B.—Which floor do you live on?--The ___ floor,and my room number is ___.A.ninth; nine zero two B.sixth; six zero secondC.five; five zero second D.five; f six one zero nine Five and nine is/are fourteen.为何既可用is,也可用are.求救阿!那Three times three is /are nine. What is nine and thirteen what four and five?nine.A)are ,They are B）what four and five?nine.A)are ,They are B）is,lt is c）are,lt is Four and five _____ nine.A.are B.is C.am Mary and I _____ nine A.am B.is C.are Seven,eight and nine are( )填什么? WHAT ARE BETWEEN ''SEVEN' AND ''NINE'' What four and five?nine.A.are TWhat four and five?nine.A.are They are B.is It's C.is Its D.are It's还有为什么. Fourteen and nine is twenty-three. ninety - nine and forty is（ ）. Six and nine is fifteen 改成疑问句 Four and nine is thirteen什么意思 five and four is nine.对nine提问.对nine提问应该怎么说? 2009年得英文怎么说,是two thousand nine,two thousand and nine还是twenty zero nine2011年得英文怎么说