[ 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:
Present Perfect Tense › ViewHe has broken his arm
A. Something that happened at some unspecified time in someone’s life
B. Something that started in the past and continues up until now
C. Something that happened in the past and has some result or relevance to the present.
Grammar › View
I will clean up the kitchen before my mother ________ home.
(A)come
(B)came
(C)comes
(D)will come
Climate 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
