This river has changed its course many times. It _________ always located where it ________ at present.
#85380
A
isn’t; is
B
isn’t; will be
C
wasn’t; is
D
wasn’t; has been
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It was only with the help of the local guide _______.
#84810
A
was the mountain climber rescued
B
that the mountain climber was rescued
C
when the mountain climber was rescued
D
then the mountain climber was rescued
The question that puzzled them is ____ they can get rid of the air pollution in the area.
#84907
A
how is it that
B
that how
C
what is it
D
how it is that