i think our sewing machine needs__________again a.to be repaired b.repairing c.being repaired

问题描述:

i think our sewing machine needs__________again a.to be repaired b.repairing c.being repaired
为什么选B不选A

Because you suppose to put 'repairing' in front of 'again' and not saying to be repaired again.if that make sense.
hope that help!求中文。。