---We’ve seen many more days of blue skies recently. ---True. But back in 1998, ________ Beijing started its “Defending the Blue Sky” program, the city only ________ about 100 days a year.
Be ___________ ---you can’t expect me to finish all this work in so little time.
—Do you like working as a waiter? —Yes, but I get tired ______ standing the whole day.
_____enough time and money, I'm sure I will do the work perfectly.
My interests include football, bowling and surfing the web ______ studying my favorite subjects.
This large sum of donation money will be given tolost their homes in the earthquake.