a group of the same types of animals, insects, or plants living together in a particular place
A. ecology
B. colony
C. source of food

Random Topics:
Perfect TenseFrequency AdverbsAlthough, Though, In spite of, DespiteVocabullary TestVerb-ing and InfinitivePassive ModalsPronunciation and VocabularyTypes of Simple SentencesIndefinite PronounsSynonym and AntonymOther quiz:
Verb + Infinitive › ViewI want … to you about something very important.
A. need
B. talk
C. ask
D. to talk
Grammar › View
Parallel structure is used in writing to:
A. Repeat the same word multiple times
B. Ensure that similar elements in a sentence have the same grammatical form
C. Avoid sentence fragments
D. Combine two independent clauses
Grammar › ViewHow many students in your class ….. from Korea?
A. comes
B. come
C. came
D. are coming
Modal Verbs › View
Tom went on and on apologizing about it, which was quite unnecessary.
A. Tom can’t have apologized. I quite understand.
B. Tom shouldn’t have apologized. I quite understand.
C. Tom wouldn’t have apologized. I quite understand.
D. Tom needn’t have apologized. I quite understand.