Mr. Smith, would you please speak a little more ________—Sorry! I thought you could follow me.

I’ll never forget the days ______ we spent together in the country.

______ is a possibility that we shall not be able to afford the particular ______ we need[ ]

Millie has _____free time than Sandy because she has____ work to do than Sandy.

Are you willing to live on Mars one day— It sounds exciting,but it still worries me.