When you open that safe, you (see) will see He (not let) won't Vo the black box. you out until you have finished you homework left you know. the sound of the explosion till after you have seen the flash. As soon as I hear from him, I (let) have You (not hear) The teacher hopes we (pass) our exams. I(wait) have balduntil you're finished - then we can go. We'll wait for her until he (come) Come back.