---Where is your father ?
---He is at work . He always has lots of work __________ .
---Can you ____them _____France?
---No, I can’t. I only speak Chinese and English.
— ____________we swim in that river?
—No, you _______. It’s dangerous to swim there.
---Is your father in ?
---No, he _______ for three days.
—What’s _____most useful invention in the 20th century?
—_____ computer, I think.
—Would you mind my sharing your English newspaper?
—________________.
---We hope you ______ China next year.
---Thanks.I will.
— Do you know who teaches ______ Chinese?
— Yes . Mr Wang does.