1.选A
其实went或者should go都可以.
此句意思是:哦,现在(已经)11点半了,到你该去上床睡觉的时候了,因为你明天不得不早起床.
考的是习惯用法.
It is (high) time that后面的从句谓语动词要用过去式或用should加动词原形,但should不可省略.
It is time that the children went to bed.
It is high time that the children should go to bed.
it's high time that sb.did sth.
多用在虚拟语气中,是时候某人该做某事了,并不表示过去时态
表示“是该做.得时候了”
2.改为 He feels it his duty to help others.
当复合宾语中的宾语是不定式时,先用形式宾语it代替不定式,把不定式置于补语之后,即:主语+动 词+it+补语+to do句式.