Shortly after the accident , two ______ police were sent to the spot to keep order . 
#14556
A
dozens of
B
dozens
C
dozen of
D
dozen
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Some of the stamps belong to me, while the rest are ________.
#11581
A
him and her
B
his and hers
C
his and her
D
him and hers
At last they got the letter they____________.
#13977
A
haveexpected
B
wereexpecting
C
hadexpected
D
hadbeenexpecting