--Shallwegotothemuseum?          --Allright!Ihearthemar...

问题详情：

--Shall we go to the museum?

           --All right! I hear them are many first­­­­­­-class photographs________ .

               A. on show       B. on board     C. on sale

【回答】

A

知识点：介词和介词短语

题型：选择题