We live day by day，but in the great things the time of days and weeks ____ so small that a day is unimportant.

_________a cold morning, I helped an old man cross the street.

Would you mind opening the window It’s too hot.–

more than 1300 hotels in Europe, Africa, Middle East region have committedto _________ in the event, with many more ________ to join the effort

_________ the window, Tom! It’s too hot.