The key answer of exercise 9

1

1. The epidemic only came to a halt after dancers started being taken to a special healing shrine.
2. It has never caused the strange behaviour most associated with dancing disease.
3. The theory wasn’t disproved until the 1950s.
4. He became the youngest man ever to hold office and he is also the only Roman Catholic to have ever sat in the White House.
5. As soon as news of the killing started spreading around the world, the local police announced the arrest of Lee Harvey Oswald.

2

The auxiliary (if there is one) goes before the subject and the verb.

3

If there is no auxiliary, we add do / does for sentences in the present simple and did for sentences in the past simple.

4

We use negative adverbials. The negative is removed from the auxiliary verb and is put instead onto a negative adverb.

5

1. Only after dancers started being taken to a special healing shrine did the epidemic finally come to a halt.
2. Never has it caused the strange behaviour most associated with dancing disease.
3. Not until the 1950s was the theory disproved.
4. Not only did he become the youngest man to hold office, but he is also the only Roman Catholic to have ever sat in the White House.
5. No sooner had news of the killing started spreading around the world than the local police announced the arrest of Lee Harvey Oswald.