Es.1 pag. 32

1. d

2. e

3. c

4. a

5. b

Es.2

1. The Apollo 13 was flying to the moon.

2. Becouse one of the fuel tanks was empty and gas was escaping into space.

3. The most experienced astronauts and NASA’s engineers did.

4. In total they spent six days in space.

Es.3

1. b

2. b

3. a

4. c

5. a

6. a

Es. 4

1. hatch

2. came up with

3. figure out

4. on duty

5. breathe a sigh or a relief

7. cheer

8. carrying out

Es.5

1. figured out

2. running

3. carried out

4. hatch

5. on duty

6. breathe a sigh

7. cheered

8. said