[ 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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Grammar › ViewKate Fox has been ____ to the board of directors
A. designed
B. appointed
C. campaigned
D. contacted
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I will ask him _____(call) you tonight.
A. to call
B. call
C. called
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
