I am busy_preparing___for the entrance examination,so I can't help_(_to )do___housework.
be busy doing 忙于做某事
help sb. (to)do sth帮助某人做某事
这是固定用法
I am busy____for the entrance examination,so I can't help_____housework.A:preparing;doing
I am busy____for the entrance examination,so I can't help_____housework.A:preparing;doing
in ancient times,many people thought birds were holy.they believed birds....的短文翻译
in ancient times,many people thought birds were holy.they believed birds....的短文翻译
英语人气：722 ℃时间：2019-09-29 14:54:58
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