French language Q&A Forum

I have some questions with the clarification for the use of PENDANT.

As I have read in other grammar lessons, PENDANT is used to express the 'full duration' of a completed action IN THE PAST ... or the 'set duration' of an action to be done in the future. Pendant cannot be used for the present!

If this is the case then 

a) would it help in clarification if some wording to that effect be added to the lesson for PENDANT,          else based on the lesson someone could ask me "why cant I go into the kindergarten room? and I could answer  " Les enfants dorment pendant une  heure" ... which would be wrong... 

b)the example sentence "Il court pendant une heure tous les matins/He runs for one hour every morning  appears to be unnecessarily skirting that rule .. or at least adding a bit of doubt??.

Of course if there is no such restrictions please let me know. 

Thank you!

Why is the first sentence in imparfait - he only went on one business trip?

Why is the second sentence in passe compose - she had tears in her eyes all day long?

quand Samuel était en voyage d'affaires à Bruxelles. 

j'ai eu les larmes aux yeux toute la journée !

FYI: I believe "vrai(e)" should be included in this lesson.

Why is "Mais ils sont venus me dire bonjour plus tôt" marked wrong in favor of "Mais ils sont venus me dire bonjour toute à l'heure?"

In the lesson, we read that 

3. Direct object pronouns le/la/les are placed before indirect object pronouns moi/toi/lui/nous/vous/leur

Aren't there other DOPs such as nous/vous/me/te? And do those qualify as preceding IOPs?

Thanks!