That is the only way we canimagine _______ the overuse of water in students’bathrooms

They will fly to Washington, ______ they plan to stay for two or three days.

The hotel ____ 50 yuan for a room for the night.

Were you at home at 8:00 last night I called you but nobody answered. —Sorry, I ________ a nap at that time.

We have just heard a warning on the radio _____________ a typhoon may be on its way．