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—Do you like math?—Yes, it’s difficult ________ really interesting.
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A
but
B
and
C
or
D
so
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It is _____ to cycle around Guilin.
#58009
A
a great fun
B
a fun
C
great fun
D
a great funny
Cycling isn’t _________ climbing, but both of them are interesting.
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A
as exciting as
B
as more exciting as
C
as excited as
D
as more excited as
 Playing soccer is difficult, ________I like it.
#55925
A
and
B
or
C
of
D
but
______ he became seriously ill, he still went on working.
#58164
A
If
B
Unless
C
And
D
Even though
I took out my notebook and wrote down my teacher’s new phone number            I forgot it.
#55195
A
until
B
before
C
when
D
since