Does the way you thought of ________ the water clean make any sense?

_____ to the party, Joan was greatly hurt.

_____ not to miss the flight at 15:20, the manager set out for the airport in a hurry.

China recently tightened its waters controls near the Huangyan Island to prevent Chinese fishing boats from _______ in the South China Sea.

One-room schoolhouses can still be found in _____ areas where there are no other schools for many miles.