别碰那幅画；它非常贵重。

Don't ___touch the painting; it's very valuable.

她碰了碰他的肩膀以引起他的注意。

She ___touched him on the shoulder to get his attention.

突然，有人碰了我的胳膊，我尖叫起来。

Suddenly, someone ___touched my arm and I screamed.