英语语法,希望能给与指点,

英语语法,希望能给与指点,
括号的是有可能错误的我想知道错误的原因怎样改正.
1.After (A going )to my room to get the magzaize,I returned and sat down (Bcontentedly).sometimes (Creading)andsometimes not doing (D nothing )
2.this school (A has had )a number of (B distinguished(C former)pupils.Many (D of us)have become famous today
3.in oneof our (A first conversation ) ,she informed me that she (B had been)ill for months ,(C but that)she hopetobebetter(Dby spring)谢谢您
还有几道单选题
1.A good salesman as he was,he never persuaded me ____buying angthing from him.
A; into B to(为什吗选A不选B,而B不是固定词组吗为什吗还选A）
2.The loss of his___of hearing didn't stop him from being a useful member of the sociey
A ability Bpower C facultyDcapability
3._____,a man who expresses himself effectiveful is sure to succeed more rapidly than a man whose command of language is poor
A other things to be equal B to be equal to other things
C were other things equal D other things being equal
(选什么为什吗呢）