The book was written in 1946,         the education system has witnessed great charges. 
#71797
A
when
B
during which
C
since then
D
since when
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She will call you if she ____. 
#41235
A
goes to
B
went back
C
is coming back
D
comes back
English is a language shared by several diverse cultures, _________ uses it differently.
#66616
A
all of which
B
each of which
C
all of them
D
each of them
We will go climbing _______ it ________ tomorrow.
#41292
A
if, rains
B
if, will rain
C
unless, rains
D
unless, will rain