practice doing sth练习做某事,
Do you mind doing sth介意做某事吗?回答如果介意用 You had better not./ You'd better not.
不介意用Of course not./ Never mind.
practice doing sth练习做某事,
Do you mind doing sth介意做某事吗?回答如果介意用 You had better not./ You'd better not.
不介意用Of course not./ Never mind.