EX1
1.There has been a ....... crisis in Asia                                                                                              (money)
2. When a small bar of a magnet is attached to a pigeon, it is ........ to navigate                               (able)
3. The Titanic was not only the largest ship that has ever been built but was regarded as ........      (sink)
4.............. drugs has thestened the young generation                                                                       (legal)
5. A new economic ............... zone has been established in our provinve                                         (process)
6. Most of the surgical instruments are made of ............ steel                                                           (stain )
7. The French ......... were defeated at Dien Bien Phu on 7/5/1954                                                     (colony)
EX2
1. Seldom we (go)............. to the concert these days.
2. If she wins the prize, it (be).............. becauseshe writes very well 
3.George as well as John and Paul (like).................... modern music
4.Jusst as I (get) to an interseting part of the story, the doorbell rang
5.(Operate).................... this machine, press the red button first
6. The goods that you cant (buy)................. at this shop
7-8.(lie) ........... on this beautiful beach is much more pleasant than (sit) in the stuffy office with a lot of work.