The key to exercise solutions in chapter 2a - Reading for the textbook On Screen B1+ - Student's Book with authors Virginia Evans and Jenny Dooley from Express Publishing
Question
Check these words / phrases in the Word List at the back of the book. Use them to complete the sentences.
What do you know about Apollo 13? What do the sentences in Ex. 2a tell us about it? Listen, read and check.
I know that Apollo 13 was a mission to the Moon. The sentences tell us that it didn't land on the Moon because there were some problems, but it made it safely back to Earth.