0 个回答
暂无答案，快来添加答案吧
撰写答案
请登录后再发布答案，点击登录
热门文章
热门问题
等待解答
推荐专家
2个答案 0次被采纳
单项选择 — 下列选项中，语法错误或用法不当的一项是（ ）
选项：
A. She has gone to Beijing twice this year.
B. The number of students in our class are 50.
C. He asked me if I could help him with his homework.
D. It’s important for us to protect the environment.
手机
浏览