v. + poll >>共 308
conduct 11.41%
boycott 6.52%
hold 4.45%
take 4.05%
publish 2.32%
contest 2.27%
release 2.03%
lead 1.98%
win 1.93%
leave 1.88%
conduct + n. >>共 390
test 8.60%
investigation 5.28%
study 5.02%
business 4.66%
research 4.00%
interview 3.79%
search 3.77%
survey 3.65%
trial 2.33%
experiment 2.18%
poll 1.95%
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