—It is on the desk.
⑴Are you sure? A. It's Kim's pen.
⑵How many pencils do you have? B. Yes, it is.
⑶Whose pen is it? C. Forty.
⑷Is it your book? D. Yes, I am.
⑴100 A. thirty
⑵90 B. ninety
⑶80 C. seventy
⑷30 D. eighty
⑸70 E. hundred
⑹60 F. sixty