would some native English speakers please help me with this? I have a few English sentences and I would like to know if there are any mistakes in them. In some sentences I underlined the specific parts I'm concerned about. This is from an academic paper so it's supposed to be formal; the content is okay, this is about grammar, style, punctuation, syntax, etc.
1. Every pupil, strong ones and weak ones equally, can and probably wants to contribute something to a discussion of this topic.
OALD: Every is always followed by a singular verb: Every student in the class is capable of passing the exam.
But maybe in this case it's different because of the "strong ones and weak ones"?
2. If time allows, the pupils play a more active part.
Maybe "time permitting" is better? But is the expression "if time allows" wrong?
3. But if the teacher is forced to visit the websites the day before or even on the day of the lesson, he can possibly avoid another problem: that one of the websites that was supposed to be used in the lesson is offline.
4. Lastly, the instructor uses the blackboard to set the class the homework to find three TV channels that are similar to the British TV channels they have talked about, and to explain their choice in 80-100 words.
Comma: yes or no? Why not? And what about the underlined construction; does it sound awkward or is it plainly wrong?
5. The pupils use their computers to fill out the worksheet.
"Fill out" or "fill in" or is there no difference for you?
6. The websites used to answer the questions on the worksheet are CBBC and Nickelodeon, two major children's and teenager's TV channels, and UKTV, which is connected to the BBC.
"Associated with" or is "connected to" okay?
Thank you for your help, everyone!