[ Grammar ]
Radioactive waste is considered ____ harmful for humans, plants, animals and surrounding environment.
A. to be
B. be
C. being
D. been

Random Topics:
Nouns, Articles, DeterminersRelative Clauses beginning with PrepositionsAdverb of MannerIdentifying TensesSentence Types and ConjunctionsAdverbial Clause, Noun ClauseSimple Future TenseGrammar: Morphologywould should couldDEGREE COMPARISONOther quiz:
Grammar › ViewSome bonsai collectors __________ for bonsai plants in jungles.
A. look
B. looks
C. looked
D. looking
Grammar › View
They _____ at this conference for the last two days.
A. have been
B. were
C. are
D. be
Present Tense › ViewWe have ____ movies in this Cineplex.
A. watch
B. watchd
C. watched
Identifying Tenses › View
What are you doing there?
A. Past simple progressive
B. Present perfect progressive
C. Present progressive
D. Past perfect progressive
