Which is diggest,the sun or the earth哪错了

Which is diggest,the sun or the earth哪错了 the whale is the diggest animal on the world这句话那有错?应怎样改? whiCH IS tHE Best which season is the ? Which season is the Which of the following is Which of the following is Which is the furthest south? which place is the beautiful? Which is the second month? Which is the first month? which is the fourth month which season is the wettest? Which letter is the ocean? which table is in the Which is the missing pattern? which is the uncountable noun? The problem is figuring out which time is which.