.To greatly raise people’s living conditions, _______.
How was your summer holiday, Lily?—I went to Beijing with my parents and we _________ a good time there.
Look! The wind is blowing strongly.—Yes, we should keep all the windows and doors ___.
Don’t ____ too late , or you will feel tired in class. —I won’t , mum. Good night.
It’s raining hard. It’s a _____ day.