--The cases look very heavy. Let me help you. --_____ , I'm quite out of breath.A. No, thank you. B. It's very kind of you. C. No, I can manage it.
________ accident happened on the busy street because ________ driver drank too much.
--- How _______ is it from Xi'an to Dunhuang? --- It's less than 3 _______ flight.
He has _______ for two years.. Two years _______ a long time.
When you feel helpless and_______, just remember you are not_______ in the world because your friends are around you.
- Is Central Park_______ largest city park in the USA? - Yes. It is_______ perfect place for people to rest after_______ hard day's work.