I am busy _____ (read) the book
问题描述:
I am busy _____ (read) the book
答
I am busy reading the book.
be busy doing sth.忙着做某事。
答
填写 reading
语法:be busy doing something
意思:我正忙着看书
答
reading
be busy doing 一个词组
答
reading
我忙着读这本书。