Complete the conversation by circling words. Then listen and check.
Chris: What (1) (do you do / are you doing)?
Beth: (2) (I give / I'm giving) a presentation next week, so (3) (I’m researching / I used to research) my topic.
Chris: Oh, yeah? What (4) (are you planning / did you use to plan) to talk about?
Beth: (5) (I’ve talked / I'm going to talk) about the spacecraft Voyager 1.
(6) (l used to be / I’ve been) interested in space ever since I was in elementary school.
My third-grade teacher (7) (taught / has taught) us about it.
Chris: (8) (I don’t know / I’m not going to know) anything about it.
Beth: Well, NASA (9) (launched / was launching) Voyager 1 in 1977.
From 1977 to 2012, it (10) (traveled / has traveled) through our solar system.
It carried all kinds of things from Earth, like recordings of languages, music, and photos.
If aliens (11) (find / will find) this spacecraft, (12) (they learn / they’Il learn) a lot about Earth.
Well, (13) (they learn / they'll learn) about Earth in 1977.
Chris: What (14) (happened / has happened) in 2012?
Beth: (15) (It left / It’s going to leave) our solar system. Since then it (16) (was continuing / has continued) to travel.
But scientists think (17) (it runs out of / it'll run out of) power around 2025.
