International communications have led to ________.
#89253
A
using English widely.
B
English having used widely.
C
English to be used widely.
D
English being used widely
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This is one of the problems_____ at the meeting at present.
#94802
A
discussed
B
discussing
C
to be discussing
D
being discussed
We’ve come to help. Which room do you want ______? 
#97422
A
cleaning
B
cleaned
C
to clean
D
to be cleaned