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 - Capitalization and Possessive Nouns › ViewTell whether each underlined possessive noun is singular or plural: The artists’ paintings quickly sold out.
A. singular
B. plural
Verb Tenses › View
. Which sentence uses the past perfect continuous? a) I had been waiting for an hour. b) I waited for an hour.
A. I will wait for an hour.
B. I was waiting for an hour.
C. I have been waiting for an hour.
D. I had been waiting for an hour.
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