题目内容:
—I forgot to return the book to you yesterday. So I______today.
A. might do it B. must do it C. had to do it D. must have to do it
参考答案:
答案解析:
—I forgot to return the book to you yesterday. So I______today.
A. might do it B. must do it C. had to do it D. must have to do it