Technology has developed ___ great speed.
ক) on
খ) at
গ) in
ঘ) by
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ক) to,to,on
খ) to,on,in
গ) to,for,on
ঘ) to,from,on
ক) in, in
খ) from, to
গ) for, after
ঘ) like, in
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