In the experiment the scientist kept a watchful eye________the developments and recorded every detail. 
#28275
A
in
B
at
C
for
D
on
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_____ his knowledge of the mountainous country, John Smith was appointed as our guide.
#29086
A
In spite of
B
On account of
C
Regardless of
D
In place of
I am tired _____ the partner I have been working with; he is too hard a person______. 
#27163
A
with; to get along with
B
from; to be got along with
C
of; to get along with
D
of; getting along with