In our school library there a number of books on science and the number of them g rowing larger and larger.
My name ____ Jack. Liu Ying and Sun Mei ____ my friends.
—____ are you? —I’m twelve.
—We need a new leader for our Helping Hands Club,but I don’t know_______. —Why not Mary? She is always willing to help others.
It’s nice _____ you to ______ so much time showing me around your school.
The art exhibition is really worth _______,and you’re sure to learn lot from it.