Fill in: APART, BEHIND, OUT WITH.

Решение:

• 1. She has fallen out with John because he lied to her. (Сочетание 'fall out with' означает 'поссориться с кем-то').
• 2. He had to stay in hospital for two weeks, so he fell behind with his lessons. (Выражение 'fall behind with' означает 'отстать в чем-либо').
• 3. I've had this toy train since I was a child, but now it's falling apart. (Выражение 'fall apart' означает 'разваливаться на части', 'приходить в негодность').
• 4. My poor old boots are falling ...
• 5. He left home after falling ...

Ответ: 1. out with, 2. behind, 3. apart