21.　 Scientists and experts from many different parts of the country have come to this n________ conference .

20.　 Doctors advised us to eat more _______ (花生) because it is good for our health.

19.　 The roads of wild animals in the forest _______ (使……感到恐惧) those travelers

18.　 They are afraid they can’t finish the task on time because the _______ (最后期限) is drawing near.

17.　 The boy who used to be very ________ (调皮) now has become a film star.

16.　 The wild storm ________ (毁坏) lots of building and trees when it hit this area.

15.　 The ______ (群众)are the true makers of history.

14.　 The animals took_________ (惊吓) at the sound of the gun.

13.　 I’m glad to have the _______ (机会)of studying English in such a good school.

12.　 The old man ________ (挣扎) to his feet and got home at last.