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Mary often studies English by _______ with a group.
#49704
A
working
B
work
C
to work
D
worked
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We screamed and laughed             the whole ride of Space Mountain.
#49743
A
at
B
of
C
through
D
for
It is very kind _____ you to help me with my lessons. It is difficult _____me to learn them well.
#51240
A
of , of
B
for , of
C
of , for
D
for , for
My father goes to work ______every day.
#48097
A
by a bike
B
in a bike
C
on a bike
D
ride a bike
They will build nature reserves _____ protect ______ birds.
#48370
A
to; in danger
B
for; endangered
C
to; endangered
D
for; in danger
_______ some ways , there are many changes in our hometown .
#49326
A
At
B
To
C
During
D
In