The pathfinder plane does weather (reconnaissance, recognizance).
reconnaissance
recognizance
Todd sent his AP Stylebook (hurdling, hurtling) into space.
hurdling
hurtling
It just never stopped! From 9 a.m. until 9 p.m. the rain was (continual, continuous).
continual
continuous
Both teams produced the same (amount, number) of extra-base hits.
amount
number
The show attracted 9 million viewers, 2.8 million (fewer, less) than "Blue."
fewer
less
His ranking plummeted (because of, due to) inactivity caused by his inability to travel.
because of
due to
His ranking fell as a result of inactivity (because of, due to) his inability to travel to the major tournaments necessary to maintain a top-10 ranking.
because of
due to
Ralph has done so much work with so little complaining. He's a real (trooper, trouper, grouper).
trooper
trouper
grouper
The students (boned up on, homed in on) their math before the test.
boned up on
homed in on
One of Reubin Askew's political elders (sat, set, threw) me down and offered me a nugget of wisdom.