Read the sentence to find out if there is any error in it. The error if any will be in one part of the sentence. The number of that part will be the answer. If there is no error, then the answer is (5). Ignore error of punctuation if any.
If I will be eating from (1)/ your lunchbox tomorrow (2)/, I will message (3)/ you beforehand. (4)/ No error (5)
1
1
2
2
3
3
4
4
5
5