[ 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:
Wish clause › ViewYesterday he missed the lesson. He wishes he______ it.
A. didn’t miss
B. hadn’t miss
C. hasn’t missed
D. hadn’t missed
Question Words › View
_____________ is standing at the door?
A. Who
B. Where
C. Why
D. How
Sentences Function and Structure › ViewSurprise!
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
