alternately, taking turns

I read the book.

私は本を読みます

I read the book taking turns.

私は本を交互に読みます

I read the book taking turns, one page each.

私は一頁ずつ本を交互に読みます

I read the book aloud taking turns, one page each.

私は声に出して一頁ずつ本を交互に読みます

I read the book aloud with my partner taking turns, one page each.

私は相手と声に出して一頁ずつ本を交互に読みます