[ Grammar ]
They ………. at work.
A. am
B. is
C. are

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Possessive Pronouns and QuantifiersPresent Simple or Present ContinuousAdverb Of PlaceSuperlativesThe -ing Form of VerbsTransitive and Intransitive VerbModals of Obligation and PermissionPresent Perfect Simple vs ContinuousIndefinite ArticleCollective NounsOther quiz:
Vocabulary and Grammar › ViewYou can use a ___________ to get energy from the sun
A. solar panel
B. wind turbine
C. power plant
D. microwave oven
Tenses › View
What is the present continuous form of the verb ‘to run’?
A. am/is/are running
B. was running
C. will run
D. running