______his arrival, he began to make preparations for the speech of the conference.
- A.In
- B.With
- C.On
- D.By
Never before seen anybody who can play tennis as well as Robert.
- A.had she
- B.she had
- C.has she
- D.she has
In 89 BC, Pompeii became a rich and busy city and near the city ____ a volcano.
- A.be
- B.being
- C.had
- D.Was