—What are people supposed to do when they meet for the first time in China?—They are supposed to _______.
--Did you finish your math exercises? --No, I ____ it the day after tomorrow.
Mr. Smith won’t go to work if he _________this afternoon.
More than 20 people ________ in traffic accidents ________ last week.
— have you learnt English? —Since 2006.
I think skiing is ____ great fun.