To preserve natural habitat, the government__________ (establish) six national parks so far.
A. established
B. establishes
C. has established
D. is establishing

Random Topics:
Simple vs Present Continuous TensesMiscellaneous Grammar UsagesEnglish MorphosyntaxAdjective ClausePast Simple and ContinuousPunctuating ClausesGerunds and InfitinitivesVerb to haveSubordinating Conjunctions and ClausesPaired ConjunctionOther quiz:
Grammar › View“How much money have you put into the account?” they asked her.
A. They asked her how much money she has put into the account
B. They asked her how much money she had put into the account
C. They asked her how much money he has put into the account
Grammar › View
It can’t be denied that English has become an _________language of the world
A. national
B. international
C. cultural
D. multicultural
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