Choose the best alternatives to complete the dialogue. Alex: Hi Sam, how was your weekend? I heard you had been to the tech exhibition downtown. Sam: Yes, it was amazing! There was this smartwatch that you could just by placing it on a special pad. You didn't even need to insert a cable; it was wireless. And to turn it on, you just had to the screen. Alex: That sounds like something we could use for our physics project. Speaking of which, have you started working on it? Sam: Yes, I've made a good start. But I'm a bit worried the assessment. If I don't get a good grade, I might not qualify for the I'm applying for. Alex: Don't worry, you'll do fine. And if you fail, it's not the end of the world. You can always the exam. Sam: Thanks for the encouragement!