— What do you think of modem music?— It is often considered not as good as ___________ of the past.

The book is of great value. _______ can be enjoyed from it until you have a deepunderstanding of it, however.

There are quite a few old books on the shelf, but _____ of them is useful to teenagers.

. --- Did ________ get through the driving test? --- No, ________. A few failed.

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