31.This product is _______ to change without notice.
A.despite
B.evil
C.subject
D.crust
32.I don't know how he can _______ himself for such conduct.
A.justify
B.locate
C.rear
D.swear
33.The stolen watch has been _______ to its owner.
A.retired
B.pitched
C.restored
D.cured
34.It is _______ cold this winter in Xi'an.
A.considerably
B.tight
C.naval
D.moreover
35.It has been my _______ to meet with this accident.
A.journal
B.reduction
C.affect
D.fate
36.Her smile _______ her secret even though she didn't admit the fact.
A.reviewed
B.reversed
C.responded
D.revealed
37.He ________ that he could finish the job without any help.
A.designed
B.headed
C.claimed
D.preserved
38.Professor Li _______ his success to his mother.
A.owns
B.ruins
C.owes
D.roars
39.The election _______ for the State governor has begun this year.
A.campaign
B.bolt
C.hell
D.immense
40.Anyone without _______ illness can do this simple job.
A.mild
B.mind
C.mental
D.mend