11. It was difficult to _ how many trees had been destroyed.A) measureB) testC) estimateD) evaluate12. The company has _ some major changes in the last five years.A) stood B) suffered C) undergone D) tolerated13. After retiring, he _ his hobby of stamp collecting.A) pursuedB) pursuit C) followed D) chased 14. At the restaurant, the only _ to chicken was beef.A) choice B) option C) selection D) alternative15. We had to learn chem
