China has got a good for fighting against the flu with its careful and smooth organization.
I wonder if you know it ___ .
The number of people invited ___ fifty, but a few of them ___ absent for different reasons.
—George is a wise person.—But in my opinion, he is ___ than wise.
The roof fell ____ he had time to rush out.
—I’m just phoning to wish you good luck in your exam tomorrow.—_ __.