Would you mind my sitting here, sir —_________. It’s for my wife.

It was ________I got home two hours later ________I realized I’d left my most important textbook behind.

下列各句中，没有语病的一句是（  ）

Nice to meet you, Mr Green. I’m Sandy and this is Brad, Ken and Emily.— .

When different cultures, we often pay attention only to the differences without noticing the similarities.