I don't know ------it today.1.what to do 2.how to do 3.to do what 4.to do how

问题描述:

I don't know ------it today.1.what to do 2.how to do 3.to do what 4.to do how

2 how to do
我不知道今天怎么去做.
从句也需要是一个完整的句子,如果用What,就与后面的it相冲突,3,4格式不对