Which of the following sentences illustrates correct pronoun usage?

Which of the following sentences illustrates the proper use of apostrophes? Helga borrowed her friend's skates for the day; however, she failed to return them.

Mr. Peach has sent his four children to Ivy League colleges __________ he has sacrificed his health working day and night in that dusty factory.

Charlotte knew ___________ the secret investigation _________ her past, but she closed her eyes to it and pretended it wasn't happening.

sleeping likes the . midday Katie until on weekends

Do you know if Harlon ____________Japanese before moving to Japan?

______ cannot see through translucent materials, but light can pass through______.

Your friends host a party and someone leaves behind a phone. Which of the following is correct?

company products enable a to another those distinguish company trademarks its from of

I__________ until I __________ all the exam topics.

'Are you coming with me?' he asked them.