He had planned to make a compromise, but ______ he changed his mind at the last minute.

 I thought she was African, but ______ she’s Spanish.

It is difficult for children to change their eating habit later in life. _____，parents should encourage healthy eating from an early age.

. ---You don’t seem to be quite yourself today. What’s wrong? --- Oh, I'm suffering from a cold. Nothing serious, ____.

It sounds like something is wrong with the car’s engine.      , we’d better take it to the garage immediately.