问题补充：
John had to have his car repaired in a garage because it seriously.
A. damaged
B. had damaged
C. had been damaged
D. was being damaged
答案：
A. damaged
B. had damaged
(答案→)C. had been damaged
D. was being damaged
解析：考查时态语态，句意：约翰不得不在汽修厂修理汽车因为它严重受损。可知在修车前，汽车损毁比较严重。用过去完成时表示过去的过去。选C。
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