[ Modal Verbs ]
This is very old. It ___ have been created in the 18th century.
A. must
B. can’t
C. could not
Select your answer:

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Grammar › ViewIdentify the verb that correctly agrees with the subject of the sentence.Patty ______ frequently for work.
A. fly
B. flies
Types of Preposition › View
My family will visit my grandparents home _____ summer.
A. on
B. since
C. at
D. in
