恒昌财富工作好做吗:一道英语词汇题

来源:百度文库 编辑:中科新闻网 时间:2024/05/06 16:17:58
Things might have been much worse if the mother ______on her right to keep the baby.
A has been insisting B had insested
C would insist D insisted
答案选B
答案选C
请详细解释一下每个选项 说明其中的语法和时态

选D
没原因,靠语感感觉出来的。