( )を問う疑問文に書き換える問題ですが、

1 I love her (very much).
2 They went there (to study Spanish).
3 (February) is the shortest month.


1 How much do you love her?
2 Why did they went there?
3 Which season is the shortest month? WhichはWhatでも可？


解答はこれでいいでしょうか。特に２は自信がありません。
お願いします。