工人们正费力地把沉重的箱子搬上卡车。

The workers were ___heaving the heavy boxes onto the truck.

人群像海浪一样涌动起伏。

The crowd was ___heaving like waves.

她晕船了，一直在甲板上呕吐。

She got seasick and was ___heaving on the deck.

水手们正在用力地把货物搬到船上。

The sailors were ___heaving the cargo onto the ship.