Why can Tom be your pen friend是什么意思

Who can be your pen friend? pen friend your be can I怎样连词成句 i,chinese ,your,can ,friend ,be ,pen(.)连词成句 Who can be your pen friend?什么意思 连词成句：can who pen friend your be ) Tom can be my pen friend Tom为画线部分（就画线部分提问） Can yo l can be your pen friend(改为一般疑问句) 这题怎么写? who can be your friend Tom to be doesn't Ben's want pen friend can you be my Chinese pen friend?为什么用be Where --------- your pen friend-------? 组成句子:want ,pen ,does ,he ,friend ,your ,to ,be?