—Mom，dad is smoking again!—Well，let him cut it ________ gradually since old habits die hard.

The famous professor’s lectures, though ____ informal, are considered far more informative and interesting.

Under criminal law, people who      carry and use large numbers of fake banknotes will be sentenced to less than three years in prison.

----What about going on a trip?----Sound a good idea. But I don't have time now and____it's too expensive.

You need to take your job________if you want to keep it.