Gunpowder is generally believed __________ in ancient China.
#95910
A
to have invented
B
being invented
C
to have been invented
D
having invented
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The house is too old. It requires ________.
#96347
A
to repair
B
repairing
C
repaired
D
repair
The discovery of new evidence led to ________.
#98070
A
the thief having caught
B
catch the thief
C
the thief being caught
D
the thief to be caught