- Excuse me, Sonia. Is this your ____? ---No, it isn’t. It’s her ruler.A pencil B eraser C ruler D book
____interesting experiment it is!
This book ___ be yours. Look! Here is your name.
Whose book is this? It’s not___ book,____ is over there
The problem isdifficult few students can work it out.
is a kind of traditional art.