[ Modal Verbs ]
Polluted air and water _____ kill plants, animals, and even people.
A. can
B. can’t
C. should
D. shouldn’t

Random Topics:
Adverbial Concession ClausesAdverbs, Modals, Preposition of timeVerb Moods and Vague PronounsFirst ConditionalVerbs + Gerund or InfinitivePossessive Adjectives and Possessive PronounsModals, Infinitives and GerundsPreposition and AdjectiveIndefinite and Definite ArticlesHomophonesOther quiz:
Phrasal Verb › ViewPeter loves kitchen work. He always helps his wife_______the dishes.
A. wash through
B. wash over
C. wash away
D. wash up
Modal Verbs › View
___ you ride a bike when you were my age,dad?
A. Could
B. should
C. can
D. may
Modals › View. I called Bob this morning, but no one answered.
A. He will leave early.
B. He picked up the phone.
C. He may leave home early.
D. He said hello.
E. He must have left home early.
Grammar › View
My mother ……. a cake every week.
A. make
B. makes
C. made
D. maded
