American English has so many _________ because the American people have come from all over the world.
#13391
A
grammar
B
vocabulary
C
pronunciations
D
dialects
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In order to go to a key university, I must______my study from now on.
#13159
A
consist of
B
get away from
C
concentrate on
D
come up with
 His pale face suggested that he ______ ill and the teacher suggested that he _______ the doctor. 
#13160
A
was, should see
B
should be, saw
C
were, had seen
D
should be, see,