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Mosaic 2 Grammar, 4/e
Patricia K. Werner
John P. Nelson

The Future

Part 2

Write the correct letter in each blank to identify the verbs in boldface.

a. Active simple form of a gerund: verb + -ing
b. Passive simple form of a gerund: being + past participle
c. Active perfect form of a gerund: having + past participle
d. Passive perfect form of a gerund: having been + past participle



1

After having been coined in 1921, the term robot was not widely used until the 1950s.
2

In industry, robots are used mostly for performing boring, difficult tasks.
3

After having installed robots, the company retrained its workers.
4

Some workers worry about being replaced by machines.
5

After having worked on the computer for nine hours, I had a backache.
6

Finishing college was not Arthur's goal.