Why didn’t you say something, Jack –Oh, sorry. I _____ messages on my phone.

It is __________ to spend money on preventing illnesses by promoting healthy living rather than spending on trying to make people ___________ after they are ill.

Could you tell me _________—By telling them some funny stories.

At home, he keeps some pets, to which he ______ all his spare time.

Most of the Europeans refuse to accept GM food ______Americans regard it as the fruit from high tech