Question

てぬ

英語　比較級

（1）の問題で、私の書いた回答だとどこがいけないのかを教えていただきたいです💦

ここでは男の子よりも女の子の方が多くボランティア活動をしています。
[as/working/more/ volunteers / than are / boys/girls ] here.
More girls than boys are working as volunteers
(2) 私は自転車を買うのに十分なお金を貯めました。
[a
saved enough bike/buy/ money / I / to ].
I saved enough money to buy a bike
(3)冬にそれらの山々を徒歩で越えるには長時間かかるだろう。
here.
(摂南大改)
It [a long time / cross/would/mountains/take/on/to/the] foot during winter.
I would take a long time to cross in the
foot during winter.
mountains
どこが間違い? >It is my dream to seeing a lot of people in foreign countries.
n 1
More girls are walking as volunteers than boys here.