__That_mango is batter(对划线部分提问)

问题描述:

__That_mango is batter(对划线部分提问)
________ easy to sing this song.
A.They're B.is C.It's (选择)
Daniel's bithday is on the October 7th.(改同义句)
Daniel's______ ______ ______ October 7th.

Which mango is better?
it's easy to sing this song
Daniel's birthday comes on October 7th.