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Jacob was _______ he knew his spellings.
The children sat in a ______.
This was a ________ waste of time.
He was considered to be a coward by his comrades.
We go to the ___________ to do our shopping.
This email has been sent by our _________ system.
Telecommunication is the ____________ of information by electronic and electrical means.
The warship fired on the enemy _________.
The country relies on _____________ trade.
Use __________ to protect the car's engine.