Unless________ to speak, you should remain silent at the meeting. 
#94058
A
invited
B
inviting
C
being invited
D
having invited
推荐题目
Helen had to shout ______above the sound of the music .
#91880
A
making herself hear
B
to make herself hear
C
making herself heard
D
to make herself heard
Have you adapted _____ in a different country?
#94337
A
to living
B
to live
C
living
D
in living
In the complete darkness, she began ___ afraid.
#97754
A
to feel
B
feeling
C
to feeling
D
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