—Is this ________ ruler? —Yes,it’s her ruler.A.your B.your sister’s C.your brother’s
There is no living thing on __________moon. A. the B. a C. 不填
— You have never seen the dinosaur eggs, have you? —________. How I wish to visit the Dinosaur World.
—Listen! Is that Millie singing? —No. It _____ be Millie. She has gone to Beijing.
— I don’t know ________ to deal with this problem. — Why not ask your teacher for help.
-- Thanks for offering me_________ useful advice! --__________.