—What was the trouble with you yesterday?— When I practised running on the playground, my strength _____ and I fell onto the ground.

 It’s known to us that Callum _____________ the local accent after talking with the native speakers.

Do be careful with those fireworks; the slightest spark could _____ them _____ .

 As we all know, a proper amount of exercise _______ to good health.

Alice trusts you ; only you can____her to give up the foolish idea.