[ Vocabulary ]
Scientists think that wild animals must ____________ in their natural habitats.
A. keep
B. to keep
C. be keeping
D. be kept

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Grammar › ViewThanks to the A.I. applications, Internet users __________ into a new language in real time.
A. can translate webpages
B. can have webpages translate
C. can have webpages translated
D. can get webpages to translate
Perfect Tenses › View
Which tense is used to express an action that will be completed at some point in the future?
A. Simple past tense
B. Present perfect tense
C. Future perfect tense
D. Future tense
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
