ea of fish being able to produceelectricity strong enough to light a lamp is almost unbelievable, _____ severalkinds of fish are really able to do this

ou finished all your exercises—Yes, ___ is left As a matter of fact,they are as easy as ABC

Tom is taller than _____ in hisclass.

Don’t blame them any more—this is _____ because theyare still young and lack experience.

He is really an excellent doctor and he is _____ to becoming an expert in this field.