The teacher together with the students ________ discussing Reading Skills that _______ newly published in America
A.are; wereB.is; wereC.are; wasD.is; was在线课程B
解析：
考查主谓一致。A+ together with+ B作主语时谓语动词与A的单复数保持一致；第二空为定语从句that指代Reading Skills，由于Reading Skills是书名所以谓语动词用单数。