Much _________ needs to be carried out to explore the possible mutations and complications of the COVID-19 Virus.
A. mutation
B. application
C. technology
D. research

Random Topics:
Grammar MistakesSimple and Continuous TensesFirst & Second ConditionalParticipal PhrasesSentence Structure and ConjunctionsPresent simple or Past simpleAdverb & Compound SentencesGrammar - ConnectorsSubject and Verbs AgreementPreposition and ConjunctionOther quiz:
Grammar › ViewComplete the sentence with an appropriate phrase.
“They will meet _________.”
A. he smiled
B. at the concert
C. after the fight
Passive Voice › View
You can’t see the house from the road. It ______________ by trees.
A. is surrounding
B. surrounded
C. is surrounded
D. was surrounded
Grammar › ViewI’m busy now, I …………. a letter to my girlfriend.
A. don’t write
B. am writing
C. write
D. writes
Verbal and Appositive Phrases › View
What is the appositive phrase in the following:
In It’s a Wonderful Life, one of the most popular movies ever made, a character named Clarence wants to get his wings.
A. , one of the most popular movies ever made,
B. , a character named Clarence wants to get his wings.
C. In It’s a Wonderful Life, one of the most popular movies ever made,
D. In It’s a Wonderful Life,
