— I'm too nervous to give a talk before so many people.— _____________, Maria.You can do it.
I’ll go to visit my aunt in England ____ the summer holidays start.
My friend is coming to visit us.I’m looking forward ____ him.
The policeman doesn’t think teenagers ____ drive.
—Do you know who the pen ___? –Sorry,I don’t know.
The mobile phone has influenced people’s life a lot since it ____.