Tenses 9

1. Old Danish, one of the languages of the Vikings who ---- in parts of Britain during the 9th to 11 centuries, ---- a strong influence on the development of English.

2. One day humans ---- on Mars if US President Bushs recently announced plans ---- to fruition.

3. China, which ---- much of Mongolia from the end of the seventieth century until the early twentieth century, still ---- the oil, coal, uranium, and empty grasslands of its former possessions.

4. The choices we make and the lives we lead ---- by the values we ----.

5. Following World War II, job prospects for young people ---- greatly which allowed them ---- more prosperous than their parents.

6. ____ since it came into being some 4.5 billion years ego.

7. The ruins of ancient Troy ---- as breath-taking as those of Ephesus or Aphrodisias, but, for anyone who has ever read Homer’s Iliad or Odyssey, they have a romance few places on Earth ----.

8. Nineteenth-century military helmets ---- than they now appear, but even at their best they ---- the way to the future of head protection.

9. Cabbage ---- as early as 2000 B.C., and the commercial varieties now ---- Brussels sprouts, common cabbage, sprouting broccoli, and kohlrabi.

10. The British government ---- details of the next stage of its genetically modified cropfield trials, thus ---- off a now familiar cycle of debate and demonstration.