They're in different ________.
A. class B. school C. schools
The mango is________．
A．black B．yellow
The blackboard is________．
A．black B．purple
Tomatoes are________．
A．redB．black
听音，选出你所听到的句子。(10分)
( )（1）A.It's red. B．It's a red dog.
( )（2）A.My name's Panpan. B．I'm Panpan.
( )（3）A.I'm a red cat. B．It's a red cat.
( )（4）A.It's a red dog. B．It's an orange cat!
( )（5）A.Now，it is blue. B．Look，it is yellow.
听音，选出你所听到的单词。(10分)
( )（1）A.blueB．black
( )（2）A.redB．white
( )（3）A.nowB．yellow
( )（4）A.I'mB．name
( )（5）A.orangeB．Bob