You can find ________ become more difficult to see clean rivers in our city.
#38592
A
that has
B
it has
C
it
D
this has
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It all depends on _____ you can support us. 
#37447
A
if
B
whether
C
that
D
what
 --- Could you tell me ________?--- It’s twenty minutes by underground.
#38206
A
how can I get to your school
B
how long does it take me to get to your school
C
how far it is from your home to your school
D
how much it costs to get to your school