[ Grammar ]
But there are some researchers who claim that the area ___ by a meteorite.
A. couldn’t have been hit
B. couldn’t have been hitted
C. couldn’t have hit
D. couldn’t have been hut

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Adverbial ClausePast ParticipleConjunctions in Complex SentencesPast Simple and ContinuousVocabulary and Verb TensesSimple Present Tense with Adverb of FrequencyPronouns, Sentence Structure, and Figurative LanguageGrammar - Reflexive PronounsNoun Phrases and AdverbialsPrepositionOther quiz:
First Conditional › ViewIf he (come) ______ , I (be) ______ surprised.
A. came/was
B. come/will be
C. came/will be
D. come/am going to be
Past Tense › View
One afternoon, we _____ lunch in a nice restaurant when my cousin____ a call on her cell phone.
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B. had/got
C. were having/ got
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Grammar › ViewA What should I buy you for your birthday?
B I don’t mind. I’ll be happy with_____________you give me.
_
A. whichever
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E. however
Comparision › View
John’s grades are _____than his sister.
A. higher
B. more high
C. more higher
D. the bigest
