there are abook and tow towpens on the desk

there are abook and tow towpens on the desk 改错 There are a pen and tow books on the desk. there is a pen and tow books on the desk.对 a pen and tow boo 1.There are (tow) pens on the desk.(对打括号部分提问) 2.There are so There ______some apple juice and tow oranges on the desk.One 改错 Tow keys and a alarm clock are on the desk There( are )(a book)and (two pens)(on) the desk There are a pencil and two pens on the desk. There are a book and two pens on the desk . There are some water and two pens on the desk. There are some books and a radio on the desk. there are tow d----- in my desk?