单项选择题
A.choice B.option C.selection D.alternative
After retiring, he（）his hobby of stamp collecting.A.pur...
单项选择题After retiring, he（）his hobby of stamp collecting.
A.pursued B.pursuit C.followed D.chased
The company has（）some major changes in the last five ye...
单项选择题The company has（）some major changes in the last five years.
A.stood B.suffered C.undergone D.tolerated
It was difficult to（）how many trees had been destroyed....
单项选择题It was difficult to（）how many trees had been destroyed.
A.measure B.test C.estimate D.evaluate
