是my birthday is april 4th 还是 my birthday is in april 4th?

是my birthday is april 4th 还是 my birthday is in april 4th? 我的生日是4月13号,是“my birthday is on April 13th”还是“in April ” 他的生日 My birthday is on April 7th.这个说法对么? 连词成句 father’s my birthday is on april 4th. 有没有my birthday is on April 4th这种说法 （）is your birthday?on april 4th My friend's birthday ia April 15th.(对画线部分提问） （ ）is( ) friend ( )It's ____today.It is my birthday.A.Wednesday,April 10th B My cousin’s birthday is on the 18th of April（改为一般疑问句） My birthday is April 11st,1987. My father birthday is April twentieth my birthday is in april改为复数句怎么改?