what's the first month of the year?介what's the first month of the year?介不好意思,我打错了.应为what's the first month of the year?介词of能换成in吗?

what's the first month of the year?介what's the first month of the year?介不好意思,我打错了.应为what's the first month of the year?介词of能换成in吗?
what's the first month of the year?介what's the first month of the year?介
不好意思,我打错了.应为what's the first month of the year?介词of能换成in吗?

what's the first month of the year?介what's the first month of the year?介不好意思,我打错了.应为what's the first month of the year?介词of能换成in吗?
在问what's the first month of the year?时,还是用of.因为of强调所属,in表示在.内.
如：May Day is the first day of May.