The Internet connection for the entire area _________ when there was a sudden power cut yesterday

下列各句中，没有语病的一句是（ ）

You don’t need to teach ___________ how to cook and sew. I can teach ___________.

When we visited Hainan again ten years later, we found it changed so much that we could hardly _______ it.

I set up e-mail addresses for my mum and dad ________ I could e-mail them regularly