[ Grammar ]
Which of the following word is incorrect?
A. sustain
B. sustainer
C. sustainable
D. sustainability

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Vocabulary › ViewWhat does ‘predominant’ mean?
A. main
B. endless
C. dull
D. false
Vocabulary › View
Choose the answer that is more closely related to the given word or phrase: pedestrian
A. walking
B. sitting
Prepositions › View… home
A. at
B. on
C. in
Parts of Speech and Compound Sentences › View
He was helping us, “even if” he did it while complaining.
A. subordinating conjunction
B. coordinating conjunction
C. correlative conjunction
