1When I looked at my watch, I realized I had missed a match

2When I looked at my watch, I realized that the match would start in 20 minutes

3When I looked at my watch, I realized that Tom was late for the match  

4When I looked at my watch, I realized that it was going to a match.

 1Tom was upset because he forgot his uniform. 

2. Tom was upset because he waited too long for his bus 

3. Tom was upset because  that he missed the match 

4 Tom was upset because  he didn't make the match