[ Tenses ]
Rayne and Marcus ____________ the scientist camp every December.
A. attend
B. attended
C. attends
D. attending
Select your answer:

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Verb + PrepositionInterjection & Prepositional PhrasesNouns and Their FormsModal and Relative PhrasesVerbs and TensesSimple Present & Present ProgressivePassive Voice with Modalsa, an, the, zero articlePassive Modals in Different TensesIdentifying TensesOther quiz:
Vocabulary › ViewA little over 70 percent of the Earth’s ________ is covered in water.
A. surface
B. face
C. superficial
D. habitat
Grammar › View
Antarctic pearlwort, a low-growing shrub with characteristic yellow flowers, is one of only two native flowering plants which ______ in Antarctica.
Which choice completes the text so that it conforms to the conventions of Standard English?
A. were occurring
B. occur
C. are occurring
D. will have occurred
