A new technique ____ out, the yields (收成) increased by 20% .
#98832
A
having working
B
having been working
C
has worked
D
had been worked
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Helen had to shout ________ above the sound of the music.
#95128
A
making herself hear
B
to make herself hear
C
making herself heard
D
to make herself heard
"Can you read?" Mary said       to the notice.
#97551
A
angrily, pointing
B
and point angrily
C
angrily, pointed
D
and angrily pointing