Have you __________________ your homework yet?
A. did
B. done
C. have done
D. doing

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Grammar › ViewCrocodiles (subfamily Crocodylinae) or true crocodiles are large aquatic reptiles that live throughout the tropics in Africa, Asia, the Americas and Australia. Crocodylinae, all of whose members are considered true crocodiles, is classified as a biological subfamily. A broader sense of the term crocodile, Crocodylidae that includes Tomistoma, is not used in this article. The term crocodile here applies to only the species within the subfamily of Crocodylinae. (https://en.wikipedia.org/wiki/Crocodile)
What is the purpose of the text above ?
A. to describe about crocodile
B. to entertain the reader
C. to retell the reader
Modal Auxiliary Verbs › View
The given sentence below is complete certainty (positive or negative):
It will not rain this evening.
A. TRUE
B. FALSE