[ Passive Voice with Modals ]
Paper ______ recycled to reduce waste.
A. must be
B. can be
C. may be
D. should be

Random Topics:
Active and PassiveMaritime Vocabulary and GrammarArticles & Compound NounsPronounPassive Voice in Past and Present TenseQuestion WordsRelative Clauses & Real ConditionalsSo, Such, Many, MuchMixed ConditionalsPhrasal Verb Put & GoOther quiz:
Phrasal Verbs › View_____ your feet when walking; you don’t want to trip!
A. Uplift
B. Lift up
Relative Pronouns › View
The exam, __________ it comes, will be easy.
A. who
B. when
C. that