My father _________ Beijing on business for three days. He will be back in two days.

I am waiting for my friend. , I will go swimming alone.

You are late . What’s the matter ? —I helped an old man _______ lost his way home .

How was your job interview yesterday?— Oh, I couldn’t feel __________. I could hardly answer most of the questions they asked.

What do you do __________ National Day?[ ]