Computers are so popular in our country that every pupil knows _____ e-mails.
—Excuse me.Can you tell me________? —At about 8 o’clock,sir.
Many social workers went to Ya’an to help________clean water and food to local people to reduce their pain from the earthquake.
—Why are you walking so quickly,Edward? —There________a talent show in ten minutes.
There________great changes in our hometown in twenty years.
—Do you know________tomorrow? —David?Never!He hates outdoor activities.