, can I speak to Mr. Smith—I’m sorry, but it is 3 weeks _____ heworked here.

I have been skating _______ nine o’clock.

We planned to meet at 8:30 at the bus station last Sunday, but Kim didn’t ______ until 12:00.

You could a bike from your friend.

．Ms Li’s business _________ very quickly. She opened her first store two years ago; now she has fifty stores all over the country.