1.In order to find a better job ,he decided to study ___seco

1.In order to find a better job ,he decided to study ___second language
为何不能添the,不是特指第二种语言么?
2.From their ___on the top of the TV tower ,visiters can have a better view of the city.
A.position B,situation答案是A为什么不是B呢?
3.It took ____building supplies to construct these energy-saving houses.It took brians too.A.other than B.more than 答案是B为什么不能选A A不是除了····的意思么符合句意啊.
4.Being a parent is not always easy ,and being the parent of a child with special needs often carries with_____extra strss
A.it B.them C.him答案是A为什么不是3呢?
5.He invited me to a dance after the show____Christmas Eve
A.at B.on C.in D.by答案是什么?是on么?