Tom. Mary can’t open the box. can you give ______ a helping hand?
— ____________we swim in that river? —No, you _______. It’s dangerous to swim there.
—Would you please tell me something about your travel in Sydney—____________.
Beijing won the right (权) of holding the 2008 Olympic Games in Moscow ____________the night of July 13th, 2001.
—Have you ever been to the Great Wall? — ____________.
Do you think maths is ____________foreign languages?