You may think that English dictionaries have been used for many, many centuries. But that is not        .
The spelling of English has always been a         but it was more of a problem in the days before a dictionary. At that time, people could spell words in         ways which you might find interesting.
But it made reading English much more difficult. So dictionaries were         to encourage everybody to spell the same.        , an English dictionary like the kind you use today wasn’t made until the time of the late Qing Dynasty. Three men did most of the important early work on dictionaries: Samuel Johnson, Noah Webster, and James Murray. These men spent nearly all of their lives trying to         words for their dictionaries. For them, it wasn’t only a(n)        ; it was a wonderful journey of discovery.

A．true B．wrong C．reliable D．responsible

A．success B．problem C．failure D．task

A．united B．various C．interesting D．permitted

A．found B．exploited C．invented D．researched

A．At times B．At once C．In fact D．In all

A．collect B．discover C．write D．memorize

A．adventure B．dictionary C．job D．book