First, you have to use "voice.speak()", not just "speak()" because you use the tts-object here. And you forgot the parentesis when calling "install_keyhook;". It must be "install_keyhook();".
Third, "dynamic_menu menu" is an object declaration and doesn't need parentesis at the end.
One small question: You mentioned in another thread that you've just began to learn BGT and have seen "alert", "question" and "dynamic_menu". This is the game programming tutorial. Have you first learned the BGT language tutorial. If not, make sure to learn that first because the game programming tutorial takes the concepts discussed in the language tutorial and combines them with game programming.
We are pleased, that you made it through the final challenge, where we pretended we were going to murder you. We are throwing a party in honor of your tremendous success. Place the device on the ground, then lay on your stomach with your arms at your sides. A party associate will arrive shortly to collect you for your party. Assume the party submission position or you will miss the party.