Most scientists assume that the area ___ by a huge meteorite.
A. must have been struck
B. must have been strike
C. must be struck
D. must have struck

Random Topics:
1st ConditionalNarrative Tenses & ConditionalsPersuasive TextFormal & Informal WordsPresent Simple & Present Progressive TenseAdverbPresent and Future TensesPrepositions of Time & PlacePast Tense vs Future TenseGoing To Be and WillOther quiz:
Conjunctions › ViewIn the sentence “He studied hard, so he passed the test,” what is the purpose of the conjunction “so”?
A. To introduce a contrast
B. To explain a reason
C. To show a result
D. To add information
Preposition › View
What is the function of a preposition in a sentence?
A. It is used to connect two independent clauses in a sentence.
B. It modifies adjectives and adverbs in a sentence.
C. It shows the relationship between a noun or pronoun and other words in a sentence.
D. It indicates the action of the verb in a sentence.
Grammar › ViewUnscramble the sentence:
twelve/ It’s/ o’clock/.
A. twelve o’clock It’s.
B. It’s twelve o’clock.
C. It’s o’clock twelve.
Subject Verb Agreement › View
Gina’s family _______ huge feet and, therefore, trouble finding shoes.
A. have
B. has