I have two (knife).knife要带s吗

I have two (knife).knife要带s吗 I have two ____________.( knife) I have two _____[knife] knife I have a knife变句 用词语的适当形式填空 I have two （ ）.knife Where's the knife? May I have my knife back?(=Can____ ____my knife ____ ____me? 1.I have a blue knife.He has a red knife.（同义句转换） Who have a knife?I have one.哪里错了 may i have my knife back 同义句 do you have a knife?no,i don't