It took him three days to read the book 的同意句He_____three days _____the book.
问题描述：
It took him three days to read the book 的同意句
He_____three days _____the book.
答
He spent three days reading the book.
词组：spend some time doing sth.
答
He spent three days going through with the book.
答
It took him three days to read the book 的同义句：
He spent three days on reading the book.