You must rig pilot ladder()port side.
A、on
B、in
C、at
D、for
A、on
B、in
C、at
D、for
A、On which side must I rig the pilot ladder? B、On which side do you want the ladder rigged? C、On what side must I rig the pilot ladder? D、On which side do you want the gangway rigged?
A、A.being rigged combined B、B.is rigged combining C、C.rigs combining D、D.is rigged combined