[ Tenses - Present and Past ]
To preserve natural habitat, the government__________ (establish) six national parks so far.
A. established
B. establishes
C. has established
D. is establishing

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Simple vs Present Continuous TensesMiscellaneous Grammar UsagesEnglish MorphosyntaxAdjective ClausePast Simple and ContinuousPunctuating ClausesGerunds and InfitinitivesVerb to haveSubordinating Conjunctions and ClausesPaired ConjunctionOther quiz:
Grammar › ViewIdentifying Phrases and Clauses: Jane needs to attend her friend’s birthday party.
A. Gerund Phrase
B. Infinitive Phrase
C. Participial Phrase
D. Appositive Phrase
Grammar - Nouns › View
Example of material nouns
A. gun
B. knowledge
C. silk
D. summer