I left my keys in the room yesterday. I had to get in______the window.
If itrain tomorrow,we’ll go on a trip.
Some volunteers(志愿者) from Beijing arrived in ShanghaiApril 29 to work for the World Expo.
--Did you see a girl in red pass by just now? --No, sir. I _______________a newspaper.
---- Do you know how to prevent (预防) the H7N9 flu? ---- You can ask the doctor for some ________.
He was riding to school it began to rain.