Business English: A Practice Book by Rose Buhlig

6. Subordinate conjunctions.

Below, the first and second sentences together make one thought, which is expressed in the third. John is a good reporter. That is why he earns a good salary. Because John is a good reporter, he earns a good salary. Combine the sentences of each group below into a single sentence, either simple or complex, omitting as many words as possible but no ideas: