is，first，at，to，classroom，class，this，there，office，and
    Welcome （1）

to

to

our school!（2）

This

This

is the teacher's （3）

office

office

．That is my （4）

classroom

classroom

．（5）

There

There

are 45 students in my （6）

class

class

．We have lunch （7）

at

at

school．The canteen is on the （8）

first

first

floor．We have a library（9）

and

and

a playground，too．Our school （10）

is

is

beautiful．