20. In December of 1987 an automobile manufacturer pleaded no contest
to criminal charges of odometer tampering and agreed to pay more than
$16 million in civil damages for cars that were test-driven with their
odometers disconnected.
(A) cars that were test-driven with their odometers disconnected
(B) cars that it had test-driven with their disconnected odometers
(C) its cars having been test-driven with disconnected odometers
(D) having test-driven cars with their odometers disconnected
(E) having cars that were test-driven with disconnected odometers
答案是D但D 中的their指代谁呢，an automobile manufacturer是singular noun
。 | 
