By the time they arrived at the station, the train .

Mum is ill in bed now. I must ____________ her.

Look at that girl. Is it Susan?–No, it _______ be her. She has gone back to her home town .

I called you at 8 O’ clock yesterday evening, but nobody answered.— Sorry. I ______ the “ Moving China 2012” award on TV. I was so deeply moved that I missed your call.

Excuse me，I want to buy some milk．Where can I find a supermarket?—Oh，I know ________ not far from my home．