____: up until this given point in time 到如今
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____: do sth. well with skill and care 进展好,情况不错
____: n. music or song in the traditional style of a country 民间音乐
____: vt. (infml) succeed in making (sb.) interested in sth. or attracted to sth. 吸引,引起兴趣
____: n. sth. that tests strength, skill, or ability 挑战