i ________think he ________swim.a./;can't bi ________think he ________swim.a./;can't b.not;can c.don't;can d.don't;/

问题描述:

i ________think he ________swim.a./;can't b
i ________think he ________swim.a./;can't b.not;can c.don't;can d.don't;/

c