[ Grammar ]
More than 20 species of sharks and rays dwell in Gabon’s new 18,000-square-mile marine sanctuary, which offer a refuge to many rare and threatened species.
A. NO CHANGE
B. have offered
C. were offering
D. offers

Random Topics:
Past Simple (to be)Grammar - Be going toArticles and PrepositionsPast Simple (Questions)Who vs WhomGrammar and SyntaxModals in the Past - Speculation and DeductionTOEICPerfect Tenses of VerbsParallelism and Subject Verb AgreementOther quiz:
Modals of Prediction › ViewI am a vegetarian. I __________ eat that steak.
A. may not
B. definitely won’t
C. probably won’t
Conditional Sentences › View
We……………..(do) our work if our computer had not broken down.
A. have done
B. had done
C. do
D. done
Grammar › ViewMy grandmother ___ there.
A. lives
B. live
C. living
D. is live
Tenses › View
Ricky … near the border of Western Australia and Northern Territory. He stopped to help some people whose car had been broken down and offered them a lift to a nearby town.
A. drove
B. had driven
C. was driving
