C. Conditional sentences. Write the correct form of the verb in brackets. 1. If they ________ (not / leave) soon, they ________ (miss) the train. 2. I ________ (invite) all my friends. when I ________ (have) a birthday party. 3. If you ________ (go) to bed now, you ________ (not / be) sleepy tomorrow. 4. If Mary ________ (cook) dinner, I ________ (bake) a strawberry cake. 5. If you ________ (want) to go to the concert, ________ (do) your homework now.