Idon'tknowhowwecanmake________onthetimetableforanymorecourses.

I bought this eighteenth century writing desk at a quite ________ price.

The address book ________ the email addresses of your friends or groups of colleagues.

Becareful,_______you'llfalldown.

In some schools children who prefer to read books rather than ________ football become social outcasts (被抛弃者 ).