[ Tenses ]
I________ along the street when I suddenly heard footsteps behind me.
A. was walking
B. am walking
C. walk
D. walked

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Grammar › ViewPeople are destroying the environment by adding……. to it.
A. pollutes
B. pollutions
C. pollutives
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Vocabulary › View
wits
A. made possible
B. to try hard to persuade
C. extremely tired
D. the ability to think quickly and make good decisions