Which sentence is true?
A.American English has no dialects.
B.American English has dialects.
C.There is no study on American speech habits.
D.American English has no exception.

The study has shown that ______.
A.different words are used in different parts to denote the same thing
B.different words are used in different parts to denote a different thing
C.there are no different words in different parts
D.dialects do not exist in American English

Differences in speech can lead to ______.

A.dialects
B.changes
C.new concepts
D.misunderstanding

Language ______.
A.frequently changes
B.is the same in almost every part
C.makes misunderstanding happen
D.makes people change

An eyewitness described how ten people (kill).............. in the fire.
A.have been killed
B.had been killed
C.killed
D.should kill

(call)..........., the milkmaid went to see the farmer.
A.to call
B.calling
C.called
D.being called

She (be)............ here but she (go).......... down with flu.
A.should have been - has gone
B.would have been - has gone
C.should have been - went
D.would be- has gone

Although his family is poor, but he studies very well.
A.is
B.but
C.studies
D.well

_______(37)
A.changing
B.transferring
C.exchanging
D.giving

_____(39)
A.have
B.have had
C.are having
D.had