We must study hard 变为一般疑问句

We must study hard 变为一般疑问句 We must study hard,---?反意疑问句的答案 So We must Study hard We must go now.(变为一般疑问句）怎么变? She must study hard 改成一般疑问 We must work hard at English（一般疑问句） ———hard at We must study hard for the people （）a student ,we must study hard We must study hard for the people. We must study hard做句型转换 We must study hard,and___,we must believe in ourselves you should study hard 改为一般疑问句