According to the report, an Iranian nuclear scientist was killed and two people were injured when a bomb ______ to a car exploded in its capital city.
#92457
A
attaching
B
attached
C
to be attached
D
having attached
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He studied hard, __________ the exam.
#93042
A
aim at
B
aiming at passing
C
aiming passing
D
aiming to passing
 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
I can’t pretend ________ happy when I am not.
#88649
A
to be
B
to have been
C
being
D
having been