注意：此页面搜索的是所有试题
题目内容
（国家开放大学理工英语3）
The law requires that everyone _______ his car checked at least once a year.
选择一项：
a.
had
b.
has
c.
have
选择一项：
a.
had
b.
has
c.
have
参考答案