Question

,

Answer 1

OK only a few questions

Answer 2

what you do when you cant slove a physics and math problems?

Answer 3

?

Answer 4

:(

Answer 5

1. It's something that has happened in the past, and is completed, so use past perfect, or "should have maximized".
I would say "should maximize" if the printing has not happened, or is happening.

2. It sounds like picking up the bottle has not happened, so "should go" should be adequate. The negation "not" has no place there, since it is not indicated in the question.

4. "...but it wasn't " is a hint that it has already happened, so "was supposed to be" would be appropriate.

6. "but he did so anyway" is a hint that the action has been completed, so I would put "was not supposed to have passed on" or "was not supposed to pass on", I'm not sure.

7. Again, it's something in the past, so "should not have understimated".

Hope that gives you a better idea for the future tests. Since I may not be the best person for the subject, other comments are welcome.
Perhaps avoid the contracted forms, like "wasn't" in formal writing. They are supposed to be reserved for conversations.