What is a food chain?
A. Not environmental thing
B. Humans eating animals
C. Animals eating humans and humans eating animals
D. The eating relationships between species within and ecosystem
E. ALL OF THE ABOVE
Future Perfect Continuous TenseIf vs. UnlessSimple Future Tense
Next quiz: Grammar
John___________ in the library this morning.
A. Is study
C. Is studying
D. Are studying
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