If prices rise too high, the government has to do something __________ it.
#49492
A
stop
B
stopped
C
stopping
D
to stop
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They promised        your minds        , or you will get your money back.
#50255
A
change; successful
B
to change; successful
C
change; successfully
D
to change; successfully
 I study math by ____ lots of exercises.
#49928
A
did
B
doing
C
do
D
does
My funny joke made my grandparents ___ happy.
#51058
A
feel
B
to feel
C
feeling
D
is feeling