In most cases, no, your spouse cannot oppose the divorce. If the court is satisfied that your marriage has irretrievably broken down and that you and your former spouse have been separated for at least 12 months, there are very limited grounds to not proceed with the divorce application.
You must serve your spouse with the divorce papers and ensure you can prove your spouse has been served according to the rules.
“Service” is the delivery of the court documents to your spouse after they have been filed. By serving the divorce papers, this ensures all parties involved have received the documents filed with the court and that everyone involved is aware of the pending divorce application.