6.I do not know whether he understands Russian.

5.There are two great camps in the world today.

4.It is necessary for all of us to study Marxism-Leninism.

3.We are surprised at his success.

2.He has never seen Chairman Mao before.

1.How long have you studied English?

10.有苏联专家的帮助，我们在两个月之内就可以完成这份工作。

1954年答案

9.我昨天看的电影讲的是列宁的革命活动。

8.全体朝鲜人民都相信美国侵略者是可以打败的。