The future of can and must is different from the will-future and the going to-future because can and must don’t have an infinitive form. If you want to express a future meaning of can and must, there are a couple of structures you can use.
Future of can and must exercise
This is an exercise about can and must in the future. Choose the appropriate structure for what is meant, depending on the context. Keep in mind that all of the following sentences are about the future.