Don't worry, sir. I'm sure I can run to catch up with them.A. slowly enough B enough slowly C. fast enough D. enough fast
— Shirley, I know you ___________ a book about China, Have you finished it? — Not yet. Maybe next year.
The food ________ because it _________ good.
He __________ when I go to see him.
Great changes __________ in China in the past few years.
My sister has learnt English _________.