[ Grammar ]
Robots were_____to be a threat to employment, but now they are known to help.
A. perceptible
B. perceptive
C. perception
D. perceived

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A(n), the, no articlePast or Present Verb TenseDegrees of AdjectivesSimple Present and Past TenseVerbs + Gerund or InfinitiveSentencesIndefinite PronounsRelative PronounsDemonstrative Pronouns and Verb TensesFuture FormsOther quiz:
Tenses › ViewHow long ………. waiting here?
A. were you
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Mixed General Quiz › View
His voice was tired so he seemed to ___ like a frog.
a. cloak
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We had ___________ meal in a restaurant.
A. a
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Grammar and Vocabulary › View
The growth… the money supply was faster than expected.
A. of
B. on
C. in
D. at
