11、 While crossing the mountain area，all the men carried guns lest they__________by wild animals．
A．should be attacked
B．had been attacked
C．must be attacked
D．would be attacked


12、The old man walked slowly，stopping__________ fbquently．
A．on rest
B．at rest
C．resting
D．to rest


13、 Critics believe that the control of television by mass advertising has__________ the quality of the programs．
A．lessened
B．declined
C．affected
D．effected


14、 __________his laziness，he was fired．
A．In relation to
B．In accordance with
C．In consequence of
D．In step with


15、 The lifeboat was sent out to__________ the sailors from the sinking ship．
A．resign
B．rescue
C．release
D．remedy


16、 It is highly desirable that a new president__________ for this university。
A．is appointed
B．will be appointed．
C．be appointed
D．has been appointed


17、 Serious__________along the border inereased our fears of war．
A．incident
B．accident
C．case
D．event


18、 There is nothing we can do__________ wait．
A．but
B．rather than
C．in spite of
D．besides


19、 The new immigrants found it hard to__________ themselves to the climate of the coun-try．
A．adopt
B．adapt
C．regulate
D．coordinate


20、 In the old days the farmers had to_________heavy stones with ropes over their shoulders．
A．push
B．drag
C．put
D．pat