This is the only way we can imagine ________ the overuse of water in students’ bathrooms.[ ]

It was at the very beginning ______ Mr Smith made a decision _____we should send for a doctor.

The speech from the new government is a _______that major changes are on the way.

Is this ________ key, Tom —No, that one is ________.

How far can you run without stopping— ________. I’ve never tried.