A.to receive B.receiving C.received D.receive
A.On B.In C.At D.During
A.North of B.by North of C.in North of D.from North of
A.When B.How C.If D.Should
A.Continue B.Start C.Commence D.Stop
A.dust B.sea water C.land sand D.wind
A.at B.in C.by D.with
A.Towing operations B.Rigid coupled towing C.Close coupled towing D.Hard coupled towing
A.on B.ahead of C.prior to D.in front of
A.At B.By C.For D.Upon
