_,” the soldier screamed loudly, who held a gunin his hands, “or I will shoot again!”

The students stopped __________ when the teacher came in.

It’s important for the figures ________ regularly. [ ]

That is one of those books that ____ worth reading.

The idea of fish being able to produce electricity strong enough to light a lamp is almost unbelievable, _____ several kinds of fish are really able to do this