---Look! Here comes the bus and I have to go now. Thank you for coming to see me off. --- Goodbye, _______.
Shelly had practiced hard for the driving test so that she could be sure of passing it on her first_________.
Recently I bought an ancient Chinese painting, _________ was very reasonable.
The doctor did _______ he could ________ the little child.
Miss Chen can show you around _______ mountain, because she has ______ good knowledge of it.
The athletes competed ________ each other for gold medals in the Olympic Games.