The two patterns _____ over periods of two to seven years in the tropical Pacific.
A. turn over
B. alternate
C. refill
D. cycle
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The most recent arrest happened in Cambodia _____ Swedish authorities.
A. up the request of
B. on the request of
C. to the request of
D. at the request of
Today Iran said it plans to _____ work at one of its nuclear plants early next week.
A. succeed
B. start
C. resume
D. go on
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