【单选题】
Throughout their history, Americans have been people()the move.
A、in
B、on
C、to
D、with
A、in
B、on
C、to
D、with
A、the Assured and their servants and agents B、the Assurer and his servants and agents C、the Charterer and his servants and agents D、the Operator and his servants and agents
A、the Assured and their servants and agents B、the Assurer and his servants and agents C、the Charterer and his servants and agents D、the Operator and his servants and agents