_____ to drive after drinking, some drivers are still trying their luck, which is dangerous. 
#90083
A
Not reminded
B
Reminded not
C
Not having been reminded
D
Having reminded not
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     a written permission, he had to write another letter to the president of the university.
#90820
A
Not giving
B
Not having been given
C
Having not given
D
Having not been given
. He said he would rather not _______ it right now. 
#98775
A
doing
B
to do
C
do
D
to be doing
The company has introduced new technologies from the US, thus _______ its production.
#94870
A
has increased
B
increased
C
increasing
D
being increased