题目内容：

1.Tom's brother often_____( clean) his room on Sundays.
2.Her sister and brother never _____(go)to bed before 10:00 pm.

优质解答

cleans go 追问我有详解哦. 第一个.Tom's brother 是第三人称 on Sundays是一般现在是太 所以用单三式、第二个Her sister and brother 是两个人 所以谓语动词用复数,所以用DO 不用DOES