Tom and Sam __ going to play football after school.下划线上填'are','is'还是'go'?
问题描述：
Tom and Sam __ going to play football after school.下划线上填'are','is'还是'go'?
答
are
理由：going是现在进行时.
现在进行时的构成方式=be动词+动词的ing形式