Many English learners find that ______ pronunciation helps them improve a lot.

下列各句中，没有语病的一句是（　　）

We don’t know_______ next. Let’s go and ask Mr. Li.

Would you like to attend China’s Got Talent《中国达人秀》— _______, but I’m busy preparing for my test.

You’ll find taxis waiting at the bus station ______ you can hire to reach your host family.