Spanish language Q&A Forum

I understand your explanation of the usage of this pair, but cannot relate them to the sentences that you set and so consequently keep getting marked wrong. It is very unlikely that I will ever do much writing in Spanish, so it is not very important to me. Unfortunately, the consequence of getting them wrong means that you keep on setting new ones on the same subject. A vicious circle. Can you please stop setting them for me so that I can move on and learn new things. The same applies to que/qué

Maam what about singular words having accent.How do they form plurals?

I've read the Q&A and related articles and am still confused. The sentence is: My sisters are often late, I always wait for them for two hours. When I apply the information in the lesson's Q&A, I ask myself: "For whom do I wait? For my sisters." Therefore sisters should be an indirect object. However, the quiz gives the direct object pronoun, las, as correct. Which is it and why? (Also, it would be helpful if you edited the questions so the correct answer to this appears consistently.) 

ps: it looks like Marcos and Lisa, below, are asking the same question in slightly different ways. Perhaps you can address all 3 questions as a group. Thanks!

In the Superbike translation exercise, you translated "We'll always remember this day" as "Vamos a acordarnos siempre de este día".  Why is "Vamos a recordar siempre de este dia" not also correct ?