[ Grammar ]
There was an explosion in technology _____ the beginning of the 20th century.
A. in
B. at
C. through
D. on

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Tenses › ViewTina has signed up for the online English course. Her lessons _________ every day at 10:00.
A. will start
B. start
C. are starting
D. starts
Modals › View
She ___ apologize for her behavior.
A. can
B. would
C. ought to
D. might
Grammar and Vocabulary › ViewObviously, I’d be … of that list.
A. in search
B. in trouble
C. in charge
D. on the top
Modal Verbs › View
Ronnie doesn’t see well. He ______________wear glasses.
A. can
B. should
