[ Preposition ]
The whole world is waiting ____ a vaccine against Covid-19.
A. at
B. to
C. for
D. in

Random Topics:
Active and Passive voiceComparatives, Superlatives, and ModalsPresent Simple for Future ArrangementPossessive Nouns with Apostrophes and PronounsHave to/Has toDefinite & Indefinite Pronoun & ConditionalsPast Simple TenseThe First Conditional SentencePast Continuous Tense & Past ModalsVocabulary and GrammarOther quiz:
Gerund › ViewMy father ___ the roof ___ .
A. get, repaired
B. will get, repair
C. get, repair
D. will get, repaired
Grammar › View
Wow! , you have got a great score.
A. Conjunction
B. Interjection
C. Verb
D. Pronoun
