[ 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:
Modals › ViewI_________to run 10km in 40 minutes.
A. am able
B. can
C. can’t
Infinitive and Gerunds › View
What is the infinitive verb of the sentence:
I promise to teach you English
A. To teach
B. Promise
C. English
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
