I'm not a native speaker, but I have two tips for you: 1) if you're American, you may have seen the "Yo quiero Taco Bell" ads with the chihuahua. This may help you remember the translation for the verb to want. 2) I see that you are also a French speaker/learner. The verb tenir in French meaning to hold is similar to the verb tener in Spanish for to have, especially in certain conjugations. To have and to hold are much more similar than to want.
Even if I am constantly having to stop myself from translating tiene as hold, this similarity may help you.
Where I come from in the U.S. we say "stairwell" and "stairway" interchangeably, but here it said that I should use "stairway" or "ladder" and that "stairwell" was wrong. Is there another term for "stairwell" that I just don't know about in Spanish or is this an error in the program?
This program is getting frustrating! Usually it will see that you have the sentence correct even if you mispell or leave a letter out of one of the words. Other times, for example, I write escalara instead of escalera and the entire response, although otherwise correct, is marked as wrong! Argh!