[ Present Continuous Tense ]
She is worried because a lot of reefs are …….
A. Doing research
B. Cleaning
C. Dying

Random Topics:
Modal PerfectPast PerfectGrammar and PunctuationPhrase or ClausePossessive AdjectivesModal Verbs in ConditionalsGrammar: so and sucha, an, the, zero articleVerbal and Appositive PhrasesGerunds/InfinitivesOther quiz:
Subject Verb Agreement › ViewClimate change ________ our planet in many ways.
A. impact
B. impacts
Vocabulary and Grammar › View
Choose the word that best completes the sentence: Her ability to ________ complex problems is highly valued in the team.
A. complicate
B. resolve
C. ignore
D. create
