screw|screwed|screwing

请用螺丝刀把这个螺栓拧紧。

Please use a screwdriver to ___screw this bolt in tightly.

桌子腿需要用螺丝拧紧。

The table legs need to be ___screwed tightly.

他们被发现在仓库里发生性关系。

They got caught ___screwing in the warehouse.