Helen’s parents( )teachers in our school.A.are each B.each are C.both are D.are both（说理由）Helen’s parents( )teachers in our school.A.are each B.each are C.both are D.are both（说理由）
问题描述：
Helen’s parents( )teachers in our school.A.are each B.each are C.both are D.are both（说理由）
Helen’s parents( )teachers in our school.
A.are each B.each are C.both are D.are both（说理由）
答
D 父母是两个人用both，A,B不对，因为be both···所以C不对，所以选D
答
1.题中有“parents”是复数，应用both，排除A和B
2.are只能放在both之前，排除C
答案选 ：D
答
both表示两个人,parents是两个人所以用are
答案：D
答
D teachers是复数，所以用both，parents也是复数，所以用are
be 动词和both all 连用时，放在be 动词前，也就是are both