[ Vocabulary ]
Scientists think that wild animals must ____________ in their natural habitats.
A. keep
B. to keep
C. be keeping
D. be kept
Random Topics:
Maritime Vocabulary and GrammarTenses and Time MarkersTenses & PrepositionPersonal pronouns + possessive adjectives + Introgative pronounsAdjective Clause-Ing and Infinitive Verb PatternsPossessive Adjectives VS Possessive PronounsSimple Past Tense (was/were)Complex PrepositionsGrammar and EssayOther quiz:
Tenses › ViewChoose the correct form: “I ___ never ___ (see) a kangaroo.”
A. am / seeing
B. have / seen
C. do / see
D. are / saw
Narrative Tenses › View
We ______ when we heard a strange noise.
A. were talking
B. had talked
C. talked
D. had been talking
Conjunctions › ViewIs your cat black _____ white?
A. and
B. but
C. because
D. or
E. so
Grammar › View
What is the complete predicate in the sentence?
The taxi driver stopped at the corner.
_
A. stopped at the corner.
B. taxi driver
C. stopped
D. the corner