If your gas line has been turned off, you cannot use your gas oven, as it requires a continuous supply of gas to operate. Gas ovens work by using the flow of natural gas or propane from the gas supply line to ignite and create a flame that heats the oven's interior.
If the gas line has been turned off due to maintenance, safety concerns, or any other reason, you should not attempt to use the gas oven until the gas supply has been restored and it is deemed safe to do so by a qualified professional.
If you need to cook while the gas line is off, you can consider alternative methods such as using an electric oven (if you have one), a countertop electric toaster oven, a microwave, or other non-gas cooking appliances. Always prioritize safety and follow any instructions or guidelines provided by utility companies or professionals regarding gas usage in your home.