___________ the three questions, which one is the most difficult to answer?
#47556
A
As
B
In
C
Than
D
Of
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— Look, the old man is walking slowly in the middle of the street. It’s too dangerous.— You’re right. Let’s go and help him go ______ the street.
#45817
A
across
B
through
C
over
D
along
. ----How do you improve your listening skills, Mary? ----I often do it _______ tapes and English radios.
#47122
A
by hearing
B
in listening to
C
by listening to
D
for listening