major in or majoring inBill,major in economics,is a good student.Bill,majoring in economics,is a good student.这两个句子哪个正确?major OR majoring?Thank you!

major in or majoring inBill,major in economics,is a good student.Bill,majoring in economics,is a good student.这两个句子哪个正确?major OR majoring?Thank you! what is your brother majoring in in the university?为什么major要加ing 有没有be major in这种说法还是be majoring in sth, majoring in physical education major in electronic or mechanical是什么意思 what are you majoring in? — What’s your major?1 I’m majoring in English 2 I’m English 3 I’m class three 4 I don’t know 这是成人大学的英语作业,我们年纪大了,看不懂了,----- What is your major,Jack?----- A、I study very hard.B、I’m learning course.C、I major English D、I’m majoring in computer science 第2题 (2) 分He thin.What’s happened 求英语作文：The pleasure of majoring in art are you majoring in english learn from you. 1.Diploma or higher with a major in Mechanics谁能帮我翻译一下这句话啊 graduate from major in 怎样用major in造句 major in怎么造句 major in unafraid是什么意思 major in english是什么意思 In c major是什么意思 technical books are used only bu students and teachers majoring in law请问majoring 做什么成份?