The missing boys were last seen ___ near the river.
The government has lost a great deal of _____ because of the large increase in food pries.
This watch is _____ to all the other watches on the market.
Arrogance and pride are similar in meaning, but there is _____ difference between them.
He didn't _____ what I read because his mind was on something else.
Scientists have to work hard to keep _____ with modern discoveries and developments.