There more visitors in Dongying this year because 2014 City Landscaping Exposition of Shandong Province (山东省城市园林绿化博览会) will be held here on September 1st.

Traffic was ____ for several hours by the acci­dent.

There are now many museums showing ______life was like back then

下列词语中的加点字，读音全都正确的一项是（ ）

The directions for operating this machine were so______ that we could not understand.