[ Grammar ]
The robot manufacturer had his customers ___ their outdated robots.
A. exchange
B. exchanged
C. to exchange
D. exchanging
Select your answer:
Random Topics:
Possessive Adjectives VS Possessive PronounsPassive Voice of TensesVerbal and Appositive PhrasesGrammar Pronoun and Singular Plural NounPresent Tense vs Past TenseSuperlative AdjectivesPhrasal Verb Put & GoOffering HelpUnreal Uses of Past TensesSimple Past - Irregular VerbsOther quiz:
Future Tenses › ViewI’ve just phoned the restaurant, and they —– at 10.00 PM.
A. close
B. are closing
Grammar › View
I saw ____ owl fly up the attic.
A. a
B. an
C. the
D. X