Topics: Gerund and Infinitive
Scientists ………….. at Stanford University School of Medicine in the US have invented an implant that could help the blind ……………. .
A. working / to see
B. to work / seeing
Select your answer:

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Prepositions - ConjunctionsPresent Simple and Past ContinuousComparative and Superlative AdverbsGrammar - Verb FormsPast Tense and NeutralPerfect Verb TensesPresent Tenses and ConnectorsTenses: Present simple, Past Simple, Future SimplePrepositions of Time1st ConditionalOther quiz:
Grammar › ViewIf I had paid attention during the lesson, I _________ have answered this question correctly.
A. answer
B. will answer
C. will have answered
D. would have answered
Grammar › View
What do you like to do ______ night.
A. in
B. at
C. on
D. to
