[ Vocabulary ]
a symbiotic relationship between members of two species in which both benefit
A. commenalism
B. parasitism
C. symbiosis
D. mutualism

Random Topics:
Present Progressive (Future)ComparisonModals and Adjectives (ed-ing)Past PassivePronoun & Present SimpleComparatives and ConjunctionsSimple Past Tense and Past Perfect TenseAcademic VocabularyPrepositions after VerbsModals and Present TensesOther quiz:
Present Perfect Tense › ViewYou’ve finished the test. The negative form of this sentence is….
A. You haven’t finished the test yet.
B. You haven’t finished the test yet.
C. You don’t finish the test.
D. You aren’t finishing the test.
Modal Verbs - Obligation › View
You …………. study to pass in the exam.
A. mustn’t
B. don’t have to
C. must
Grammar › ViewComplete. Use the correct form of used to and the verb in brackets.
…………………………………………. your dad ………………………………………. (work) at the sports shop?
A. Does your dad used to work
B. Did your dad use to work
C. Is your Dad used to work
D. Did your Dad used to work
Articles and Quantifiers › View
we use ___ the second time we mention a person / thing.
A. a/an
B. the
