英语试题解析：
1.The singer and the dancer ____ our evening.
A.is to attend B.are to attend C.were to attend D.is attend
(为什么不选C?)
2.Are the shop's goods ____ on ____.
A.are…showed B.is…show C.are…show D.is…showed
为什么不选A?）
3.____ under the chair?Two balls.
A.Where are B.Where is C.What are D.What's
(为什么不选C?)
4.I'll visit ____ next Sunday.
A.the Smith's B.Smiths C.the Smiths' D.the Smith
(为什么选B?)