French language Q&A Forum

I am somewhat confused by one of your examples "Je suis assis entre Léa et Tim." The point of the exercise is not lost on me you are using the sentence to demonstrate the use of "entre". What puzzles me is the use of "je suis assis" which combines the present tense of etre "je suis" with the simple past of to sit "assoier". I'm obviously missing something obvious but it totally confuses me. I thought you had suggested that "I am sitting" and "I sit" can be  expressed by the same construction, the meaning altered by context; so why not "J'assieds entre Léa et Tim"?

I've answered the quiz question: "J'ai peur qu'ils _________ la vérité." with "ne sachent."  This was marked incorrect and the correct answer was "sachent."  I submitted that as an error, but the response there was to come here and ask why it's incorrect.  

I've reviewed the 'ne explétif' lesson over and over and am sure I've lost my mind.  In that lesson, "avoir peur que" is NOT marked as depending on whether the phrase is negative and says that it always takes the 'ne'.  Can anyone help me understand why my answer is incorrect? Many, many thanks.

I'm struggling to see the use of "l" in the phrase : mais je pense que l'on mériterait