请写出以下的过去式和过去分词!
know
grow
spit
read
set
hurt
catch
teach
feel
sell
learn
wtand
参考答案:know knew known
grow grew grown
spit spat spat
read read read
set set set
hurt hurt hurt
catch caught caught
teach taught taught
feel felt felt
sell sold sold
learn learnt learnt
stand stood stood