The accident happened on January 8th.（英译中)

The accident resulted in the death of two passengers.（英译中)

The book is on the table.（英译中)

The war was on then.（英译中)

My car is none the worse for the accident.（英译中)

The troops marched on.（英译中)

It was obvious that the accident happened ______ .A．on designB．with purposeC．by designD．by