来自孙凤荣的问题
heisthebestteacher()ihavemet.A,thatB,whoC,whoseD,which还有类似的一个是Anyone()hasproblemscancometotheteacher,soffice.A,whomB,whichC,whoseD,that
heisthebestteacher()ihavemet.
A,thatB,whoC,whoseD,which
还有类似的一个是Anyone()hasproblemscancometotheteacher,soffice.A,whomB,whichC,whoseD,that
