I feel __ interesting to talk with native speakers of English.

Most of us found ______ difficult to finish the work in such a short time.

They were all asleep.         of them heard the sound.

I would like to buy some good English reference books, but _______ was available from the bookstore, where I only found some Chinese ones.

   our textbook ,the English spoken in England in the past is very different from ____ spoken at present.