______ many times, my elderly mother still can’t remember how to light the gas.
#91689
A
Had told
B
Having told
C
Having been told
D
Being told
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The boy pretended ______ his homework, when his parents came back home.
#97990
A
to do
B
do
C
doing
D
to be doing
This agreement will be signed by the managers_________.
#95282
A
concerns
B
concerning
C
concerned
D
to be concerned
Every minute is made full use of _______ our lessons.
#97952
A
studying
B
to study
C
study
D
being studied