Select the grammatically correct form of the following sentence from the options below:
I'm sorry, but I shouldn't attend the meeting tomorrow because I already have plans.
1
I'm sorry, but I can't attend the meeting tomorrow because I already have an plans.
2
I'm sorry, but I couldn't attend the meeting tomorrow because I already have plans.
3
I'm sorry, but I can't attend the meeting tomorrow because I already have a plans.
4
I'm sorry, but I can't attend the meeting tomorrow because I already have plans.
5
Question Not Attempted