Where did you get this book?—I picked it up from a second­hand bookshop if you ________ know.

The newcomer is really quite ______ to office work. Why not offer her some practical tips?

Do you feel like________there or shall we take a bus?— I’d like to walk, but since there isn’t much time left, I’d rather we________a taxi.[ ]

In the central part of Asia, horses are used to _____ goods. [ ]

If you want to make yourself _____, you should speakclearly and slowly.