she knew ___of them ,soshe left soon

但是通过对其他孩子的观察,她知道这件事情一定很糟糕.

B
这是so.that."如此.以至于.“句型
首先排除C,D 因为此句型前面一般只用so,such
so 一般修饰形容词,副词； such修饰名词
这里是个例外,即当名词被little,much,few,many 修饰时,一般用so,而不是such
请在客户端右上角评价点“满意”即可

此时此刻,她站起来向全班同学讲话的同时,她也知道她所编造使人相信的这些故事有可能会反过来伤自己的心.

我的解答如下供你参考：
一、这是一个复合句,其结构比较复杂,为便于分析,先对句子的语序做适当调整,但不改变原意也不改变语法结构：
she knew it was not the time to be worring about anyone else as she suerly would if she chose one.

二、语法成分分析：
1. "She” 是主句的主语；
2. "knew" 为主句的谓语动词,一般过去时.谓语动词后面的“it was not the time to be worring about anyone else as she suerly would if she chose one.”
是宾语从句,其中 "knew” 后面合理省略了连词“that”.

三、上述宾语从句内部有以下语法结构：
1. 物主代词 "it” 做宾语从句的主语,泛指时间,"was"是联系动词,后面的 "the time" 是名词做表语. “联系动词 + 表语” 组成 “合成谓语”；
2. “to be worring about anyone else” 是进行时的不定式短语作为定语修饰 "time",意思是：“去为其他人担心的时间”
3. “as she suerly would (worry about somebody)” 由连词 "as" 引导的状语从句.
4. “if she chose one” 条件状语从句

四、根据语法分析,全句可以改写为：
She knew that once she chose someone, she would worry about him but it was not yet the time for her to do that since she didn't choose anybody.

这是一个关于as的倒装句,全部倒装,倒装时,前面不能出现冠词..

she knew she would win对
解析：此题考查宾语从句时态,当主句是过去时,从句一般也用过去时
所以：knew 过去式,宾语从句要用过去将来时：would do