In China,it is a traditional________to show respect to ancestors during the Qingming Festival.
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A
belief
B
custom
C
strength 
D
principle
推荐题目
 He is sure to ________ with the help of Mrs. Li.
#13087
A
make a progress
B
make progresses
C
make the progress
D
make progress
By the end of last week, nearly 80 percent of the work       .
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A
have finished
B
had been finished
C
will be finished
D
was finished
Having seen the X-ray, the doctor decided to ________ the patient.
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A
operate
B
operate on
C
work
D
work on