下面三个选项中有一个与其他两个不同类，请把它选出来并将其序号填入题前括号内。（5）
（1）A. baby B. brother C. town
（2）A. east B. sound C. south
（3）A. pancake B.elbow C. knee
（4）A. date B. August C. March
（5）A. lady B. straw C. king
Yesterday Liu Yun____ a mountain with her parents.
A．climbed B. climb C. climbing
Amy is a teacher, she _____ English.
A. teach B. teaches C. teacher
What _____ she like to do?
A. do B. does C. is
Where does the ____come from ? It comes from the clouds.
A. rain B. sun C. cloud
What are you going to do ______Sunday?
A. on B. at C. in