[ Modal Verbs ]
In the past, robots had a _______ role, but they will play a very important role in the future.
A. useful
B. minor
C. complicated
D. dangerous

Random Topics:
Zero Conditional SentencePassive Voice with Modal VerbsVerb Forms and PrepositionsMixed ConditionalComparative & Superlative AdverbsVerb PhraseFOR & SINCEAdverb ClausesPassive with ModalsSimple Verb TensesOther quiz:
Phrasal Verbs › Viewcut down on
A. Reduce the amount of something
B. stop doing something
C. recover form a difficult situation
D. find by chance
Subject-Verb Agreement › View
Spaghetti and meatballs ___ our first course when we went to the party.
A. Were
B. Are
C. Was
D. Is
Surprise!
A. Exclamatory
B. Declarative
C. Negative imperative
D. Interrogative
Simple Past Tense › View
The Caribbean monk seal ____ the only species of seal that ____ made extinct by humans. It ____ declared extinct in 2008
A. was – was
B. was – is
C. is – was
D. is – is
