She looked unhappy because she had made ________ mistakes in the English test.
#14336
A
two scores
B
scores of
C
two scores of
D
score of
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There has been ____ accidents on this part of road. 
#14351
A
a number of
B
a great deal of
C
a series of
D
plenty of
 One minute she burst into _____, and the next she burst out _____. We just couldn’t catch her mood at any moment.
#11988
A
crying; laughter
B
tears; laughing
C
tears; laughter
D
crying; laughing
 Some people are good at _____ voices on the phone while others ______.  
#12263
A
knowing; aren’t
B
recognizing; don’t
C
knowing; don’t
D
recognizing; aren’t