How was ______ they discoveredthe entrance to the underground palace—Totally by chance.

When something ______ me, Ialways feel ______.

What a table! I’ve never seen such a thing before. It is it is long.

My mother is ill. — .

On April 14, 2010, many people dressed in black with white flowers ______ their chests observed three minutes of silence in memory of the victims in Yushu Earthquake .