题目内容
The law required that everyone ________ his car checked at least once a year.
| A.has | B.have | C.had | D.will have |
B
B [require后接宾语从句用虚拟语气,谓语动词用should加动词原形,should可以省略。]
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| A.has | B.have | C.had | D.will have |