你可能感兴趣的试题
sings; sings is singing; is singing sings; is singing is singing; sings
sing sings is singing is sing
Listen, hear Hear, listen Listen, listen hear, hear
to listening to to listen to listening to to listen
can; may not must; mustn't can; can't may; won't
will, may not must, mustn’t can, can’t may,won’t
talking says talk is singing
singing is singing sings sing
will;may not must;mustn’t
may;can’t may;won’t
singing sings is singing are singing
are singing is singing are sing sing
will, may not must, mustn’t may, can’t may, won’
湘公网安备 43130202000226号