Question

please answer the question in a loud enough voice____all the class may hear

a so that
b or
c in order that
d and
为什么答案是c而不是a

Answer 1

so　that　在这里引导目的状语从句，既然是从句那么后面的句子就应该是完整的，而all the class may hear后面明显缺宾语所以选C以下是二者区别及用法，希望对你有帮助
　1、在所给句子中，两个短语都可以使用，而且都正确，即：
I hurried _【_so that/in order that_】 I wouldn't be late for class.
句意：我匆匆忙忙是为了我上课不迟到。
2、so that:有两种用法 ——
①【为的是，以便】，引导目的状语从句，此时意义上等同于 in order that。但是，区别在于【in order that】可以【放在句首】，而【so that】则【不能放在句首】。例如：
We started early 【so that/in order that 】we could get the first bus.
【In order that】the workers can work hard,they have been given higher bonus.
2.【 以至于;结果】，引导【结果状语从句】，一般【用逗号与主句隔开】。例如：
They ran to the station, 【so that】they caught the train for Beijing in time.
3、so...that,【 以至于;结果】，引导【结果状语从句】。例如：
Li Lei studied【 so 】hard 【that】 he was admitted into Fudan University last year.
4、in order to,so as to
这两个短语都是【以便；为了】，表示目的，但是，他们都是【不定式】形式，不能引导从句。还有，在位置上，【so as to】【不能位于句首】；而【in order to】则【可以放在句首】。
例如：
A large number of college students prefer to working 【in order to/so as to】make money for their education.
【In order to】help great numbers of senior students realise their dreams of going to college, our government have taken lots of measures .

Answer 2

so that后面要跟完整的句子，明显缺个宾语。