摘要：23．The project alongside with the experiment we had once devoted so much time perfectly． A．to work out B．to working out C．to worked out D．has worked out
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The project alongside with the experiment we had once devoted so much time _________ perfectly．
[ ]
A．
to work out
B．
to working out
C．
to worked out
D．
has worked out
The project alongside with the experiment we had once devoted so much time__________ perfectly.
| A．to work out | B．to working out |
| C．to worked out | D．has worked out |