Change the following sentences into the passive form.

Witam
Prosiłbym o sprawdzenie moich zdań
Z góry dzięki
1. You must wash silk by hand. Silk must….
Silk must be washed by hand
2. You cannot use the lights outside.
The lights cannot be used outside
3. You ought to turn the device off.
the device is ought to be turned off
4. The committee might reject our proposal.
Our proposal might be rejected by the committee
5. You should not iron these clothes.
These clothes should not be irond
6. Can you use this smartphone in the USA?
Can this smartphone be used in USA
7. They might send a space rocket to Mars in the next decade.
A space rocket might be sent to space in the next decade
8. You have to wear a helmet on the site.
Helmet has to be worn on the site
9. You need to follow a specific rule here.
a specific rule must be followed here
10. The boss had to postpone the meeting until June.
The meeting had to be postponed until June

I see at least 6 mistakes.

Can you correct it please?

3 jedno slowo za duzo
5 literowka
7 a Mars?
8 przedimek
9 inny czasownik

Rzucisz okiem jeszcze raz?
3 the device ought to be turned off
5 These clothes should not be ironed
7 to nie wiem jak zmienić, pomożesz?
8 A Helmet has to be worn on the site
9 A specific rule need to be followed here

7 :-) nie pomoge, czytaj dokladnie

9 zla forma w czasie simple present

6. przedimek

I tak wielkie dzięki
9 A specific rule needs to be followed here tak?
7 A space rocket might be sent to a Mars in the next decade ?
Twoja podpowiedź mnie zmyliła i próbowałem zdanie od Mars zaczynać.
A reszta jest poprawna?

Can this smartphone be used in the USA
tak powinno być?

'a Mars?' bylo po polsku, czyli 'sent to Mars', przepraszam za mieszanie w glowie

nic się nie stało, i tak jestem ogromnie wdzięczny.
czyli ostatecznie powinno być?
A space rocket might be sent to Mars in the next decade

ok