求助几个英语语法题这几题我做出来的答案和标准答案有出入,请帮我看一下.1.It was___ that we went

求助几个英语语法题
这几题我做出来的答案和标准答案有出入,请帮我看一下.
1.It was___ that we went camping in the mountains last week.
A.such nice weather B.too nice weather C.so nice a weather D.nice weather so
我的答案为A,标准答案是D
2.She hoped that we ___ the plan ready before she came back.
A.got B.have got C.will have got D.would have got
我的答案是D,标准答案为C
3.The radio ___ by my son just now.
A.has been repaired B.is being repaired C.repaired D.has repaired
我的答案是B
4.I felt as if I ____ .
A.was watched B.were watched C.had been watched D.have been watched
我的答案是C,
5.The letters ____ that morning.
A.were delivered B.delivered C.had been delivered D.was delivered
我选A,
6.It's the first time that you have been here,___?
A.haven't you B.hadn't it C.aren't you D.hasn't it
我觉得这题的答案应该是isn't it
7.___ some of the suggestions prove of value to you as well?
A.Could B.Can C.Might D.May
8.--You mustn't go today.
--Oh,I mustn't,___?
A.mustn't I B.must I C.shouldn't I D.should I
9.He was the only friend I made during the four years ____ I was at university.
A.what B.which C.since D.that
这三题不确定,还请告之理由.
9.Let us sing,____?
A.will you B.shall we C.won't we D.will you
我选A,标准答案为B
10.I was greatly shocked by the way ___ things were done there.
A.how B.that C.as D.which
我觉得这题是方式状语从句,应用that,
第三题 我记得老师曾说过just与完成时态联用,just now一般与过去时联用,而且just now有现在的意思.
第四题 表示与过去事实相反，谓语动词用“had+过去分词”,而这里有felt一词,不表示过去的感觉吗
最后题 the way属于什么从句语法学家还在争 但我在课本上看过有跟that,或什么都不加

注：虽然我的回答都是一道道查过书的,但是现在很多书都有错误,而且好像和前两位的一致答案有很多不同的地方,因此请你三思而后行.
1.我纠正以下上一层的意见,such后面是可以跟不个数名词的.
你不用着急,我有一道和这道题一样的题,答案就是选的A
3.选A
B选项的意思是：录音机正在被修理,与just now"刚才"相矛盾
4.虚拟语气
如果从句表示与现在事实相反,位于动词用一般过去时,表示与过去事实相反,谓语动词用“had+过去分词”；表示与将来事实相反,谓语动词用“would(might,could)+动词原型”.
仔细品味一下,是不是对现在的虚拟?
6.我个人认为你选得没有错,反意疑问句中的简短问句应和it is the first time相呼应,而且我做过一道题,只是把你题中的here改成了to+一个地点,它的答案就是isn't it.