David has made great progress recently .— _____, and____ .

The idea has been widely accepted______Beijing Opera should be added to the basic education in China.

What sort of house do you want to have?Something big?— Well, it ______ be big-that’s not important.[ ]

Are you happy with your new computer? —– No, it is _______ me a lot of trouble.

I like eggs, and I eat____________ for breakfast.