Lily is so happy _____ delicious soup for her parents.
As we all know, the Silk Road _______ China to the west in ancient times.
Do you know leaving for Zunyi or not tomorrow?
Being _______, the novel written by a famous teacher sells _______.
Could you tell me _______?
---I find _________ hard _________ me to understand his handwriting.---It’s polite _________ you to say so. His handwriting is too bad.