6. Scientists are praised by the people of the whole country. because they have made important contributions to the development of science.

5. The Party Central Committee headed by Chairman Hua is leading us on the (a)new Long March.

4. Since the Cultural Revolution, a reservoir and a power station have been built(set up)in our commune. (Since the Cultural Revolution, our commune has built(set up)a reservoir and a power station. )

3. When Comrade Chang came in, I was reading a newspaper.

I was reading a newspaper when Comrade Chang came in.

While I was reading a newspaper , Comrade Chang came in.

2. In winter it is colder in the north than in the south.

1. He is old enough to join the army.

5. We are always taken good care of by our teacher.

4. Chang Hua was chosen League secretary.

3. I don' t think he' ll go there tomorrow.

2. Who does she often carry water for?

(Whom does she often carry water for?)

(For whom does she often carry water?)