他正在仔细地连接每一根电线。

He is carefully ___connecting each wire.

社交媒体帮助我们与远方的朋友保持联系。

Social media helps us in ___connecting with friends who live far away.

这座桥连接着两个村庄。

The bridge ___connects two villages.

这项研究试图将睡眠不足与记忆力下降联系起来。

The study aims at ___connecting sleep deprivation with memory decline.