小题1:happened改为that/ which happened或者happening
小题2:classmate改为classmates
小题3:snacks改为the snacks
小题4:our改为their;
小题5:are改为were
小题6:but改为and
小题7:before改为after
小题8:to去掉
小题9:strong改为strongly
小题10:pays改为pay
小题1:happened改为that/ which happened或者happening
小题2:classmate改为classmates
小题3:snacks改为the snacks
小题4:our改为their;
小题5:are改为were
小题6:but改为and
小题7:before改为after
小题8:to去掉
小题9:strong改为strongly
小题10:pays改为pay