A feather falls slower than a stone only because the air holds the feather back more than it ______ the stone.
#74760
A
does
B
holds
C
will
D
is
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Mr.Morse,who graduated from a famous medical university,spent years ______ his skills as a doctor.
#82500
A
adapting
B
acquiring
C
occupying
D
concentrating
The book has been finished and will ______ next month.
#74876
A
come about
B
come true
C
come out
D
come along
I make most of my money by writing books but I do __________ magazines sometimes.
#78295
A
refer to
B
see to
C
contribute to
D
add to