5 أسئلة سهلة ومهمة Find the mistakes

[secret11]

Find the mistake in each of the following sentences, then write them correctly:

1- He always does what other people tell him. He hasn't got a mind on his own.
2- Having switching off the lights, Maged fell asleep.
3- It is possible that the new food will make about a new disease.
4- He looked behind himself.
5- Factory workers demand higher salaries.

بالتوفيق,