Gunpowder is generally believed __________ in ancient China.
#95910
A
to have invented
B
being invented
C
to have been invented
D
having invented
推荐题目
______________ the reading the room, the teacher found some students _________ at the table _________ a report.
#95231
A
Entered; seated; written
B
Entering; seating; writing
C
Entering; sitting; wrote
D
Entering; seated; writing
Finding her car stolen, ______
#89913
A
a policeman was asked to help
B
the area was searched thoroughly
C
it was looked for everywhere
D
she hurried to a policeman for help