Taking 'al' and 'del' out of the practice words?
Whenever I do the "practice weakest words" function, there're a few phrases that keep coming up, like "El perro del niño es blanco" or "La niña oye al oso." In these cases, the highlighted words are "al" or "del." Is there any way to take these words out of the practice regimen? I know them well, but these simple sentences keep reappearing, and it makes practice kind of childish. Any ideas, anyone?