Every boy and every girl knows that each

shuhaiku2019-12-17  4

问题 Every boy and every girl knows that each day and each hour brings their duty.

选项 A. andB. KnowsC. bringsD. their

答案D

解析their→his/her。用every修饰的名词后面的动词用单数形式,所以也应该把表示复数的their改成his/her。
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