Who sang________in the competition,Tom,Kate or Bob—I think Bob did.I almost slept at that time.

________ his scientific work，he has no time to care for his family affairs，which his wife always complains about

Look, dark clouds are gathering.It is________to rain soon.[ ]

Why didn’t you try _________a bicycle to go to school

"I’m glad ______ you here in thehotel.""It’s my great pleasure to have you ______ us."