We must study hard, mustn't we?
我们应该努力学习，不是吗？
We must study more about packing.
我们必须多研究包装才行。
我们必须努力学习英语。
我们必须更加努力地学习。
We must study harder from now on.
从今以后我们必须更努力学习。
We must study more about packing.
我们的多研究包装才行。
我们应当努力学习英语。
So we must study hard from now on.
所以我们必须从现在开始努力学习。
We must study hard for the people.
我们必须为人民而努力学习。
On the one hand, we must study hard.
一方面，我们应该努力学习。
We must study hard for our motherland.
我们要为祖国而勤奋学习。
Yes, now we must study foreign langues.
是，现在我们必须学习外语。
We must study English hard, mustn't we?
我们必须努力学习英语，对吗？
Second, we must study as hard as we can.
我们要尽可能的用功读书。
我们必须努力学习。
We must study harder to keep up with him.
我们要赶上他必须更加努力地学习。
我们必须好好学习。
We must study hard to keep up with The Times.
我们一定要努力学习，以赶上时代的步伐。
Our teacher stressed that we must study harder.
老师强调我们必须努力学习。
We must study hard and make progress every day.
我们必须好好学习，天天向上。
We must study how to run meetings successfully.
要研究怎样把会议开好。
First, we must study out the fund of the meeting.
首先我们必须拟定会议的花费。
If we want winning, we must study the winning law.
要制胜，就必须研究制胜规律。
No, our teacher is strict, we must study and study.
不，我们的老师很严格，我们必须学了又学。
We must study their experience in running factories.
我们必须研究他们管理工厂的经验。
So, we must study, grow up, create a more "miracle"!
所以，我们一定要好好读书，长大后，创造出更多的的“奇迹”！
In the second place, we must study as hard as we can.
我们要尽可以或许的勤奋读书。
At last, I think we must study hard and never give up.
最后，我认为我们必须努力学习，永不放弃。
Secondly, we must study hard because knowledge is power.
其次，我们必须努力学习，因为知识就是力量。
Secondly, we must study hard because knowledge is power.
其次，我们必须努力学习，因为知识就是力量。
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