His poor performance maybe attributed to the lack of motivation.
A.caused by
B.focused on
C.taken for
D.viewed as
第1题
A.encourage
B.obtain
C.publicize
D.advertise
第2题
A.most acceptable
B.most expressive
C.most favorite
D.most desirable
第3题
A.is proportionate to
B.is composed of
C.lies in
D.relies on
第4题
A.vigorously
B.effectively
C.efficiently
D.rigorously
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