There are two blackboards ____the wall and two doors _____the wall.
#48700
A
in, in
B
on, on
C
in , on
D
on , in
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Before the bridge was built ______ the river, the villagers had to take a boat to the other side.
#47823
A
in
B
beside
C
across
D
along
—May I ask you _____ the writer? —Sorry. I don’t know him. You can ask Sam ______ help.
#48212
A
about; for
B
about; about
C
for; for
D
for; about
Do you go ______ a school trip ______ a museum every year?
#50463
A
on, to
B
to, on
C
for, for
D
to, to