[ Adverb of Frequency and Past Continuous Tense ]
I __________ (usually, double-check) my front door before leaving for work
A. usually double-check
B. usually double-checks
Select your answer:
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Vocabulary & Grammar › View. What is an “invention”?
A. A traditional practice
B. A newly created object or idea
C. A method of communication
D. A historical event
Grammar › View
Amy ______ finished her homework.
A. have
B. having
C. is
D. has