7. No one has seen Tony since his 40th birthday. -> The last time 8. They began using this machine in 2012. ->  This machine 9. They haven’t fed their monkey for two days. -> They last 10. My uncle stopped drinking alcohol when he got married. -> My uncle has  

7. The last time they have seen Tony was on his 40th birthday.

8. The machine began being used by them in 2012.

9. They last fed their monkey two days ago.

10. My uncle has not drank alcohol ever since he got married.

the correct answer is c. he speculates on what might happen at given points in the future in a world without people. alan h. weisman is an american author, professor, and journalist. authors organize their information with a purpose. they present their ideas in an organized way. this is called text structure. weisman uses text structure so as to improve overall comprehension and to prove his points.

its he tried to add or forgive me but he said forego