It seems that pigeons have a compass inside them that tells them _____ they need to go. That is why they never get lost.

Do you mind if I sit here– . It’s for our teacher, Mr. Wu.

Miami and Oklahoma City, both of ______were the last two undefeated teams in the NBA this season, lost for the first time on January 3rd.

China is playing an important role in the worldThat’s Laura has come to study Chinese

The man received a ticket for speeding. He ____have driven so fast. [ ]