2 Complete the sentences. Use going to, who, where, or that. 1 He's the astronaut who walked on the Moon. 2 The musicians aren't 3 That's the spacecraft 4 I'm 5 My friends are 6 That's the planet play their instruments in the parade toda took the astronaut to Mars last year. go to the carnival with my grandparents next weekend. eat space food at space camp. they sent the Curiosity rover.​