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:
Grammar & Vocabulary › ViewI worked hard last term, but my exam results were _______ so I was so _______.
A. disappointed/ excited
B. disappointing/ exciting
C. disappointed/ embarrassed
D. disappointing/ embarrassed
Grammar › View
Tomorrow afternoon we’re going to play tennis from 3 o’clock until 4.30. So at 4 o’clock, we ( play) _____ tennis.
A. will play
B. will be playing
C. will have played
D. will have been played
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
