This is really a good birthday gift for a young girl, ____at a proper price but fashionable.

Cars do cause us some health problems—in fact far more serious ________ than mobile phones do.

Mr Black,          who we all admire, is a kind but strict teacher．

Annoyed by the salesman’s bad manners, John chose       of the two computers on sale and left．

They were all very tired, but ______stopped to have a rest.