Where did the accident happen —It was at the post office near the MansionFriendship ______ the peace talk would be held.

Many people watched the opening ceremony of the 2013 Shanghai Tourism Festival ______ September 14.

下列各句中，加线的词语运用正确的一项是（ ）

It’s 8 o’clock. My mother is reading a book. My sister and I _____.

One million people of the city, ______ thought little of the event, were asleep as usual that night.