除非
You can fly to London this afternoon _____ you don’t mind changing the plane for Paris.
You can fly to London this afternoon \_\_\_\__ you don’t mind changing the plane for Paris.
The weather forecast says there’s going to be a heavy storm here in two or three hours, so we have to hurry back home _____ it comes.
The weather forecast says there’s going to be a heavy storm here in two or three hours, so we have to hurry back home \_\_\_\__ it comes.
I can’t finish the work in time _____ you help me translate the texts.
I can’t finish the work in time \_\_\_\__ you help me translate the texts.
Generally, snakes won’t attack humans _____ they are threatened with danger.
Generally, snakes won’t attack humans \_\_\_\__ they are threatened with danger.