[ Grammar ]
It is our responsibility to ________ our planet’s ecosystems.
A. preserve
B. preservation
C. preserving
D. preserver
Select your answer:

Random Topics:
Conditionals and Modals of ProbabilityVerbs + Gerund or InfinitiveGerunds in SentencesConjunctions & PrepositionsPresent Perfect vs Past SimpleCompound AdjectivesPast Simple or Past ContinuousGrammar and Sentence CorrectionRelative ClausesTenses - Irregular VerbsOther quiz:
Homophones › ViewRam went to the _______ where new buildings were being built.
A. Sight
B. Site
C. Cite
Grammar › View
Choose the sentence with correct punctuation:
A. Where did you find these?
B. Where did you find these.
C. Where, did you find these?
D. Where did you find, these?
