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

The flight attendant welcomed us ___ the plane. 

Reading the job ad．he wondered whether he was ____ to apply for it．

Our       new machines are much cheaper to run.

All in all, the TV programmes were peaceful and entertaining,but the following programme contains scenes that may be ______ to some viewers.