[Q]: How does the sentence end?

Kevin invited Derrick in to make tej with them, because

[A]: Derrick was younger and learned their family traditions.

[Q]: How does the sentence end?

Laura had to teach Megan about how to handle knitting wool, as

[A]: Megan struggled with handling the material.

[Q]: How does the sentence end?

Cynthia got her period a lot later than did Natalie. So,

[A]:
Natalie likely went through puberty a little earlier.