Then came a terrible thunder ________ the sudden lightning.
#94359
A
followed
B
followed by
C
following
D
following by
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According to the engineer, there remain some tests _____ before the machine is put into operation.
#91175
A
carrying out
B
carried out
C
being carried out
D
to be carried out
._______ in the leg, the soldier was sent to hospital.
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A
Seriously injured
B
To be injured
C
Injuring badly
D
Having injured
When first____ to the market, these products enjoyed great success.
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A
introducing
B
introduced
C
introduce
D
being introduced