You must study hard if you want to get good grades in English .为什么要用must 不用can

you must study english hard 的谓语和主语是什么 you must study hard and not ___(浪费） time 同义句转换 .You must study hard.If you don't study hard,you will fail the exam.(otherwise) So We must Study hard And he must study hard for you,for me,for our future---you must work hard ,I must study hard中文是什么这些英文是什么 As a student, you must study hard. as a student,As a student, you must study hard. as a student, 是什么句子成分?请解释 if you want to study English well ,you must to work hard.错在哪? If you want to learn English well ,you must study ___?c.hard D. hardly you must study hard,or you won't get good g__ You not only study hard,but also you must be happy. You must study hard if you want to get good grades in English .为什么要用must 不用can In order to i_____ your English,you must study hard.翻译这句子 _____ a student,you must study hard.A.As B.To C.For D.Of ---to a good college,you must study hard.A To go B Going what i want to say is ___,you must study hard.this or that? -----a student,you must study hard at your lessons-----填什么 怎么说汉语：“Teacher ever so good,You must study very hard.