Kangkang is good _____ running. He thinks it is good _____his health.[ ]

I’m sorry I’m late. I got held up in the traffic on my way here. —___________________.

When ______ you ______ reading Jane Eyre?—It’s hard to say. I’m busy recently.

What were you doing when I called you at 8 p.m. yesterday?—I the piano at that time.

Good luck_____ your maths! [ ]