[单选题]46.Thiswastheyear—withBritainout,terrorismwaningandthemigrantcrisisatanebb—thattheEuropeanUnionhadhopedtorepairandreviveitscherishedgoalofopeninternalborders.Ifsomething___________________,itbecomesgraduallyweakerorless,oftensothatiteventuallydisappears.

A
waves wanes
B
wanes
C
wakes
D
wages
正确答案:B
扫描二维码
免费搜题、免费刷题、免费查看解析