There are alot of different ways to phrase your questions. For example, the second question: From all the possible rivals, is this team the weakest one? or Is this team the weakest one from all the possible rivals? I like the second one better.

In the last sentence that you typed, "did" sounds good, but the word "compose" needs to be past tense with a "d." on it to make it sound correct. :)

It sounds like to me that that the word "effort" should have the word "time" substituted for it. Who wrote it? Did you write it? Did the teacher write it? What you are asking seems confusing.

I would be glad to help you, if you still need further help. I am a certified English as a Second Language teacher in the U.S. Just click on my profile and do a friend invite.