[ Preposition ]
The whole world is waiting ____ a vaccine against Covid-19.
A. at
B. to
C. for
D. in
Select your answer:
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Preposition and Preposition PhraseNouns & PronounsVocab and GrammarVerb Moods and Vague PronounsWill, Be going to, Present ContinuousConditional Sentence Type 1Time Clauses of FutureArticles & QuantifiersSimple Present Tense vs Present Continuous TenseModal Verbs for DeductionOther quiz:
Conjunction › ViewHa Long Bay has spectacular natural landscapes._______, it attracts many tourists.
A. Hence
B. However
C. Because
D. So
Tenses › View
When I ____ a little girl, I used to climb trees and go swimming in the river with my friends.
A. am
B. was
C. have been
D. had been