[ TOEIC ]
Sustainable ______ is the key indicator of the long-term health of the economy.
A. produce
B. to produce
C. productive
D. productivity

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Grammar - direct/indirect objectsSimple Present ProgressiveVerb PatternsHope, Thank, Modal VerbsPrepositionComparison Degree & GerundsPresent and Past Simple PassiveSubject Verb Agreement and Coordinating ConjunctionsDefinite vs Zero Article Abstract NounsPresent Perfect Simple & Present Perfect ContinuousOther quiz:
Verbs: Action, Linking, and Helping › ViewCarol plays at the beach.
What type of verb is the underline verb?
___
A. Action Verb
B. Linking Verb
C. Helping Verb
Future Tenses › View
Which sentence is an example of future simple tense?
A. He plays soccer.
B. He will play soccer.
C. He was playing soccer.
D. He will be playing soccer.
Tag Questions › ViewYou haven’t tidied your room,_______
A. have you?
B. do they?
C. aren’t we
D. was it?
E. haven’t you
Grammar and Vocabulary › View
Look at that man! He ____________ off his ladder is he isn’t careful.
A. is going to fall
B. is falling
C. will fall
D. falls