Question

либо Past Simple либо Past Continuous
1. The Apollo 13 astronauts (prepare) ............ ............ to land on the moon when 
they (discover) ............ a problem with the spaceship.
2. The band members (play) ............ ............ a concert when Adrienne’s clarinet
(squeak) ............ . She (feel) ............ embarrassed.  

Answer 1

1)prepared / were discovering
2)were playing / sgueaked/ felt

Answer 2

1. were preparing, discovered
2. were playing, squeaked, felt