A)
1. I didn't want to say anything about the accident in case she shouldn't be informed that her son was involved
2. I didn't want to say anything about the accident in case she hadn't been informed that her son was informed
3. I didn't want to say anything about the accident in case she wasn't informed that her son was involved
4. I didn't want to say anything about the accident in case she might not have been informed that her son was involved
B)
1. He got rid of his cell phone in case he could be traced
2. He got rid of his cell phone in case he should be traced
3. He got rid of his cell phone in case he was traced
4. He got rid of his cell phone in case he could have been traced
Hello,
What are the differences among the given choices respectively. What model or forms follow "in case" grammatically and which of these are the commonest usage in modern English grammar?