1. Wait a minute, please. The concert soon. 2. When humans on the Red Planet?

3. OK. At 5 o’clock we you outside the shopping centre.

4. They probably me the job. I had a terrible interview.

5. I’m sorry about losing that book. I you another one next week.

6. you me when you get the news?

7. If it doesn’t rain tomorrow, we our umbrellas.

8. Turn on your laptop tonight. We a little bit.

9. I them here again, whatever you say.

10. I think people CDs in 20 years’ time.

Read this excerpt from "edward jenner and the history of smallpox and vaccination.” smallpox was introduced to europe sometime between the fifth and seventh centuries and was frequently epidemic during the middle ages. the disease greatly affected the development of western civilization. the first stages of the decline of the roman empire (ad 108) coincided with a large-scale epidemic: the plague of antonine, which accounted for the deaths of almost 7 million people. the arab expansion, the crusades, and the discovery of the west indies all contributed to the spread of the disease. unknown in the new world, smallpox was introduced by the spanish and portuguese conquistadors. the disease decimated the local population and was instrumental in the fall of the empires of the aztecs and the incas. similarly, on the eastern coast of north america, the disease was introduced by the early settlers and led to a decline in the native population. before it reached the new world, smallpox played a role in