Choose the alternative that correctly completes the sentences below.
1 - “Please, ask the guests to come in.”
“Sorry, I don't know ______."
2 - “Where is my key?”
“Oh no, I've lost ______!”
3 - “Look at your children.”
“Don't let ______ play near the street.”
Ⓐ they / it / they
Ⓑ them / them / them
Ⓒ her / him / us
Ⓓ them / it / them
Ⓔ him / them / themselves