They had to stay at home _____ a heavy rain.[ ]

Why are you in such a hurry, Mike?–There an NBA basketball game in ten minutes.

Look! The light is still on. Is Mr Wu working in his office？—No, it _____ be Mr Wu. He has gone to Nanjing for a meeting.

Zhou Jielun is so cool. I’m his fan, _____.[ ]

I found the babyas soon as he had heard his mother .