问题补充:
She looks very sad. I want to help her, but I just don’t knowCto do it.
A. what B. when C. how D. which
答案:
解析:“疑问词 + 动词不定式”是英语中常用的一种结构。在句中可以作主语、动词或介词的宾语以及表语。
时间:2020-11-30 08:17:24
She looks very sad. I want to help her, but I just don’t knowCto do it.
A. what B. when C. how D. which
解析:“疑问词 + 动词不定式”是英语中常用的一种结构。在句中可以作主语、动词或介词的宾语以及表语。