. There ______ a meeting tomorrow afternoon.
On summer nights, we often go to sleep ____ the window open.[ ]
I called you at 4:00 yesterday afternoon, but no one answered.—Sorry, I ______ with my friends at that time.
Let’s go ____ a trip to Mountain Huangshan. It’s beautiful. [ ]
Thousands of people______ after the powerful earthquake happened in Wenchuan on May 12th.