几个英语问题、我需要详细解答

几个英语问题、我需要详细解答
①They will make ____ study of the information sent back from ____ space by weather satellites.
A.a;/B.the;a C.a;a D.the;/
②Since you ____ around our school,we hope you'll give us some advice.
A.have shown B.have been shownC.have been showing D.showed
③ The private school was closed down as a ____ of its terribly bad management.
A.matterB.consequenceC.whole D.total
④If I were ____ younger,I would do ____Iam interesting in.
A.some;what B.any;whatever C.some;which （D可以忽略）
第③题选A为什么不行
第④题中是不是在虚礼语句中要用否定词